Question

Find the value of : cos2 45 sin 30​

Answer 1

Answer:

Cos square 45° + sin square 30°

Cos 45 = 1/root 2

Sin 30 = 1/2

(1/root 2)^2 + (1/2)^2

= 1/2 + 1/4

= 2+1/4 = 3/4

3/4 is the value.