Question

Which of the following are identities? Check all that apply.
a. cot^2x+1=csc^2x
b. tan^2x=1-sec^2x
c. sin^2x=1+cos^2x
d. sin^2x+cos^2x=1

Answer 1

Which one you think it is?

Answer 2

I honestly do not know but I think D is one of them.

Answer 3

@AloneS do you know how to do it?

Answer 4

i can help let me see

Answer 5

ok i dont know any of these good luck with ur answer

Answer 6

A is correct.
B should be \[\tan ^{2}x+1=\sec ^{2}x\]
C should be \[\sin ^{2}x + \cos ^{2}x = 1\]
D is correct.