Question

(tana+cota)^2-(tana-cota)^2=4​

Answer 1

Answer:

Given tan A+cot A=2

Squaring on both sides we get,

tan

2

A+cot

2

A+2tanAcotA=4

tan

2

A+cot

2

A+2=4

tan

2

A+cot

2

A=2