Which of the following are trigonometric identities? Check all that apply.

A. 4cosx sinx = 2cosx + 1 - 2sinx
B. cscx-sinx/cscx=cos^2x
C. tanx cosx cscx = 1
D. 1+cotxtany=sin(x+y)/sinxcosy

Question

Which of the following are trigonometric identities? Check all that apply.

 		A.	4cosx sinx = 2cosx + 1 - 2sinx
 		B.	cscx-sinx/cscx=cos^2x
 		C.	tanx cosx cscx = 1
 		D.	1+cotxtany=sin(x+y)/sinxcosy

alekos · Answer

i would say none of the above

anonymous · Answer

i know C is right but idk about the rest

alekos · Answer

well C is the only one where the LHS = RHS

if that's what you're asking?

alekos · Answer

but i wouldnt call that a trig identity