Question

prove that : cos a / sin (90°- a ) + sin a / cos (90° - a ) = 2 .

Answer 1

sin(90-a)=cos a

cos(90-a)=sin a

cos a/cos a+sin a/sin a

=1+1

=2

Answer 2

cos a/ sin (90 - a)+ sin a /cos (90 -a)

= cos a /cos a sin/ a sin

= 1 + 1

= 2

hope this helps☺️☺️.......

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