Question

What is the value of (cos67^2 – sin 23^2) ?​

Answer 1

Answer:

Answer is zero (0).

Explanation

as we know

sin (90-a) = cosa

here a is an angle.

same is in question as sin^2(23) can be written as

sin^2(23)= sin ^2( 90-67)= cos^2(67)

so answer is zero.

Thanks for taking interest in my answer.