Question

tan a + cot a = 3, tan^5 + cot^5 = ?​

Answer 1

Step-by-step explanation:

let tanA=x then cotA=1/x

x+1/x=3=>. x^5+1/x^5=?

use binomial identities to solve the problem easily

(x+1/x)^5 formula to make your work easier