Question

cos(x+2y) = m.cosx,
prove
cot y=(1+m)/(1-m).tan(x+y)​

Answer 1

There are more methods to solve. But the componendo dividendo rule is the easiest.

Ask me in the comment section if you don't understand something.

Good luck!! :)

Answer 2

Step-by-step explanation:

Hope it helps you

do a favor please mark it as brainliest