Practice Introduction of Trigonometry - Dormant Offered by Unacademy

Introduction of Trigonometry

Evaluate the following trigonometric expression:

$\cos ^{2} 60^{\circ} \sin ^{2} 45^{\circ}-2 \sin ^{2} 0^{\circ}+\frac{1}{2} \sin ^{2} 90^{\circ}$

$\frac{5}{8}$

$\frac{8}{5}$

$-\frac{5}{8}$

$-\frac{8}{5}$