Question

Cos^2 THETA+COS^2(90-THETA) = ?

Answer 1

$\bold{\boxed{HEY!!!}}$

$<b>Here is your answer :-$

cos²A + cos²( 90 - A )

= cos²A + sin²A

= 1.

$<marquee>THANKS...$

Answer 2

Cos²§ + cos²(90-§)

= cos²§ + {cos(90-§)}²

= cos²§ + {sin§} ²

= cos²§ + sin²§

=1