Advertisements
Advertisements
Question
Show that tan4θ + tan2θ = sec4θ – sec2θ
Sum
Advertisements
Solution
L.H.S. = tan4θ + tan2θ
= tan2θ (1 + tan2θ)
= tan2θ × sec2θ
= (sec2θ – 1) sec2θ
= sec4θ – sec2θ
= R.H.S.
shaalaa.com
Is there an error in this question or solution?
