Question

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

A. tan(x-pi/4)=tanx-1
B. 1-tanxtany=(sin(x+y))/sinxsiny
C. tanx-tany=sin(x-y)/cosxcosy
D. cos(x+pi/6)=sin(x-pi/3)

Answer 1

@Hero I've heard you're good

Answer 2

@kaitlynfrancis101 you still around?

Answer 3

I suppose not.