Question

hey guys
plz answer my question​

Answer 1

Step-by-step explanation:

= [ (1+sin@)(1-sin@) / (1+cos@)(1-cos@) ]

= ( 1-sin²@)/(1-cos²@)

= (cos²@)/sin²@

= cot²@

= (cot@)²

= (7/8)²

= 49/64

Answer 2

Answer:

we can find sin¤ and cos¤ by right angled triangle Pythagorean triplets..

so by this we can get answer