Question #93741
1 Answer
Mar 22, 2017
see explanation.
Explanation:
We require to use the following
trigonometric identities
∙sin2x+cos2x=1
∙1+tan2x=sec2x
⇒1+tan2xsin2x+cos2x
=1+tan2x1
=1+tan2x
=sec2x=right side ⇒ verified