Question

please answer this question quick​

Answer 1

Answer:theta =0,pi,2pi

Step-by-step explanation:

1-sintheta/1+sintheta =1-sin^2theta/cos^2theta

1-sintheta/1+sintheta =sec^2theta - tan^2theta

(sec^2theta-tan^2theta =1) so

1-sintheta /1+sintheta =1

1-sintheta =1+sintheta

So sintheta must be zero

So theta =0,pi,2pi

After substituting the value....

The equation will be proved

Answer 2

HEY! SOLUTION IS GIVEN IN THE ATTACHMENT

HOPE IT HELPS :)