Question

Show that tan4 A + tan A = Sec A - sec2 A.
Plz slove it on a paper​

Answer 1

Step-by-step explanation:

ANSWER

L.H.S.

tan4θ+tan2θ

tan2θ(1+tan2θ)

(sec2θ−1)(sec2θ)              ∵tan2θ+1=sec2θ

sec4θ−sec2θ