Question

tell this answer please​

Answer 1

Step-by-step explanation:

cos ∅/1+sin∅

first multiply it by 1-sin∅/1-sin∅

we get ,

(cos ∅/1+sin∅)* 1-sin∅/1-sin∅

= cos∅(1-sin∅)/1-sin²∅

we know that

1-sin²∅=cos²∅

now ,

cos∅(1-sin∅)/1-sin²∅=

cos∅(1-sin∅)/cos²∅

= 1-sin∅/cos∅

=( 1/cos∅)- (sin∅/cos∅)

= sec∅-tan∅

hope it helps.