4.2+due+8-31


 * __REMINDER:__ Problems need to be in numerical order and at the end of each section the name of the person who worked the problems and the person who checked the problems needs to be listed.**

2)

Done by Alyssa Sturgis

I got the same answers! :) Checked by Mady Smith



Done by Morgan Miller

6). t= π/3 answer: (1/2, √3/2) 8). t= 5π/4 answer: (-√2/2, -√2/2) 10). t= 5π/3 answer: (1/2, -√3/2)

Done by Emma McRae

I got all the same answers! Yay! Edited by Ellen Barth

Done by Rebekah Adair

I got the same thing. Checked by Daniel Pugliano **﻿CORRECTION: 5pi/4 is (-****√2/2,** **-****√2/2) (they are both negative!!)** **therefore** **sin t =** **-****√2/2 csc t =** **-****√2** **cos t =** **-****√2/2 sec t =** **-****√2** **tan t = 1 cot t = 1**

Done by Jan Dudek

i agree with these answers, PETER RADECKI

20. t=11pi/6 = (sqrt(3)/2, -1/2) sin= y = -1/2 cos= x = sqrt(3)/2 tan= y/x = -sqrt(3)/3

22. t=-2pi = (1,0) sin= y = 0 cos= x = 1 tan= y/x = 0

Done by Matthew Milan :D

I got all the same answers! Checked by Alyssa Johnson

24.t= 5pi/ 6-- (-sqrt(3)/ 2, 1/2) Sin= 1/2 Csc= 2 Cos= -sqrt(3)/ 2 Sec= -2sqrt(3)/ 3 Tan= -sqrt(3) Cot= -sqrt(3)/ 3 Done by Rachel West

Good job! :) I got the same answers. Checked by Meredith Hohl **﻿CORRECTION:** **tan 5pi/6 = - (****√3) / 3**  **cot 5pi/6 = -** **√3**

26. t = 3pi/2 (x,y) -- (0,-1) Sin = -1 (x = 0) Csc = -1 (1/y = 1/-1 = -1) Cos = 0 (y = -1) Sec = 0 (1/x = 1/0 = 0) Tan = 0 (y/x = -1/0 = 0) Cot = 0 (x/y = 0/-1 = 0)

Done by Courtney Venable I got undefined for Cot but otherwise I got the same answers. **﻿CORRECTION:** **csc 3pi/2 = undefined (1/0 is undefined)**  **tan 3pi/2 = undefined (-1/0 is undefined)**  **cot 3pi/2 = 0 (0/1)**   <span style="color: #ff00ff; font-family: arial,helvetica,sans-serif; line-height: 19px;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">Done by Kamryn Richard <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"><span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">30. Cos 7pi = Cos pi = -1 32. Sin 9pi/4 = Sin pi/4 = sqrt2/2 34. Sin (-19pi/6) = Sin (-7pi/6). Coordinates are (-sqrt3/2, 1/2). Sin (-7i/6) = 1/2 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> Done by: Jennifer Hassell <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">Checked by Emily Johnson <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">40. Sin(-t)=3/8 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">a. Sin (t)=-3/8 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">b. Csc (t)=-8/3 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">42. Cos t=4/5 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">a. Cos (pi-t)=-4/5 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">b. Cos (t+pi=4/5 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">Done by Miles Hennington <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">I got the same answers! Checked by: Amy Finkelstein <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">44. tan pi/2 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">undefined <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">46. cot 3.7 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">1.6006 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">48. cos(-2.5) <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> -.8011 <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">Done by Andrew Kim <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"> <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"><span style="color: #ff00ff; display: block; font-family: arial,helvetica,sans-serif; line-height: 19px;">**50. sec 1.8 = - 4.401** <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"><span style="color: #ff00ff; display: block; font-family: arial,helvetica,sans-serif; line-height: 19px;">**52. sin ( - 13.4) = - 0.740** <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"><span style="color: #ff00ff; display: block; font-family: arial,helvetica,sans-serif; line-height: 19px;">**62. TRUE** <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;"><span style="color: #ff00ff; display: block; font-family: arial,helvetica,sans-serif; line-height: 19px;">**64. TRUE** <span style="color: #333333; display: block; font-family: 'lucida grande',tahoma,verdana,arial,sans-serif; line-height: normal;">