5.5+due+10-12

Done by: Frances Dannenbrink

I got the same results, and my work is identical to yours. Great job! 4 & 6 Checked by Kelsey Harmon 180 done by Peter Radecki

20) Done by: Emma McRae

24. 4sin(x)cos(x) + 1 = 2sin2(x) + 1

Done by Sam Bennack

26. (cosx + sinx)(cosx - sinx) = cos^2(x) - sin^2(x) = cos(2x)

Done by Sam Bennack

I got the same answers.
 * 's: 24 & 26 Checked by Emily Johnson

36,38,40 36.

38.

40. done by joon baek

I got the same thing. Checked by: Michael MacCrory

42. I did the problem the same way and got the same answers!
 * 1) 42 Checked by Amy Finkelstein

48. Done by Will Duffy


 * 50.**[[image:003.JPG width="617" height="385"]]
 * I was supposed to check but its getting late and isn't up yet so I went ahead and posted my work,**
 * Checked by Courtney Venable**

54. done by Freddie Jordan

i got the same thing for sin and cos, but on my computer your work for tan was kind of hard to read but i'm pretty sure i got the same thing. checked by: Kamryn Richard

58 -sqrt(1-cos(x-1)/2) = sin(x-1)/2

Done by Jan Dudek i think you were supposed to post 88 also, so i will post mine 88.sec2x=sec^2x/(2-sec^2x) 1/(cos2x)=sec^2x/(2-sec^2x) 1/(2cos^2x-1)=sec^2x/(2-sec^2x) 1/[2(1/sec^2x)-1]=sec*2x/(2-sec^2x) sec^2x/(2-sec^2x)=sec^2x/(2-sec*2x) as for 58. i was not sure if its supposed to be sin(x-1)/2 or sin(x/2)-1/2 Checked by Alex Dubois



90, 92, and 94 worked by Mady Smith
 * 1) 95 Done By Kristen Hanslik