Question #17b3b
1 Answer
Jan 11, 2018
See the answer below....
Explanation:
We know,
color(red)(sin^2x+cos^2x=1
LHS:-
1+tan^2x
=1+sin^2x/cos^2x
=(cos^2x+sin^2x)/cos^2x
=1/cos^2x
=sec^2x (proved)
Hope it helps....
Thank you....
