Question

answer the 7 th question a,b,part​

Answer 1

I hope it answers well

Answer 2

1+sin * 1-sin = 1^2 - sin^2

= cos^2

1+ cos * 1 - cos = 1^ 2 - cos ^ 2

= sin ^ 2

sin^ 2/ cos ^ 2

= cot^2

7^2/8^ 2

= 49/64

this is the same answer for the b part