Question

complete the identity
cos (x-y)/sin x cos y =?

Answer 1

\[\large \cos(x-y)=\cos(x)\cos(y)+\sin(x)\sin(y)\]\[\large \frac{\cos(x)\cos(y) +\sin(x)\sin(y)}{\sin(x)\cos(y)}= \frac{\cos(x)\cos(y)}{\sin(x)\cos(y)}+\frac{\sin(x)\sin(y)}{\sin(x)\cos(y)}\] simplify

Answer 2

cot x + tan y?

Answer 3

\[\large \frac{\cos(x)\cancel{\cos(y)}}{\sin(x)\cancel{\cos(y)}}+\frac{\cancel{\sin(x)}\sin(y)}{\cancel{\sin(x)}\cos(y)}\]\[\large \frac{\cos(x)}{\sin(x)}+\frac{\sin(y)}{\cos(y)} = \cot(x)+\tan(y)\]

Answer 4

Woo!good job Yeo:D

Answer 5

i just didn't know that you could separate that fraction cos(x)cos(y)+sin(x)sin(y)/sin(x)cos(y)

Answer 6

Yeah. ofc :)

Answer 7

ok cool, thanks so much!

Answer 8

np:)