Question

Rewrite 2 cos 75° sin 75° using a double-angle identity.

Answer 1

sin(150) or 1/2

Explanation:

Using the double angle identity of sin2x = 2sinxcosx, you can determine the value of x and rewrite the function; 2sin(75)cos(75) = sin(2(75)) = sin(150) = 1/2