Question

Someone please help Verify the identity
cot ( θ - pi/2) = - tan θ

Answer 1

ok i will...:)

Answer 2

what is cot(x-y)?...cotxcoty+1/coty-cotx...right?

Answer 3

put x=theta and y=pi/2

Answer 4

we get \[\cot(\theta-\pi/2)=\cot \theta.(\cot \pi/2)/(\cot \pi/2)-\cot \theta\]

Answer 5

cot pi/2=0..

Answer 6

we get the answer as 1/-cot theta which is -tan theta

Answer 7

thanks

Answer 8

My pleasure @Aurelia0912