Question

pls answer this question​

Answer 1

Answer:

please mark it as brainliest answer first

Answer 2

Answer:

1

Step-by-step explanation:

(1+ tan^2 theta)=1+ sin^2theta/cos^2theta

                        =(cos^2theta+sin^2theta)/cos^2theta

                        =1/cos^2theta

(1-sin theta)(1+sin theta)=1^2-sin^2theta

                                     =cos^2theta

finally,

1/cos^2theta*cos^2theta=1