Question

1 + 10 square theta into cos theta divided by cos squared theta​

Answer 1

Answer:

Explanation:

(1+tan^2 theta)×costheta/cos^2theta

1+tan^2 theta =sec^2 theta

Cos theta/cos^2 theta =sec theta

So,

Sec^2 theta × sec theta= sec^3 theta

Or 1/cos^3 theta