Question

tan^2 60° -2 cos^2 60° - 3/4 sin^2 45° - 4 sin^2 30°
evaluate this​

Answer 1

Step-by-step explanation:

tan^2 60° -2 cos^2 60° - 3/4 sin^2 45° - 4 sin^2 30°

=(root3)^2 - 2(1/2)^2 - 3/4( 1/root2)^2 -4(1/2)^2

=3 - 1/2 - 3/8 - 1

=2-1/2-3/8

=(16-4-3)/8

=9/8

Answer 2

Answer:

9/8

Step-by-step explanation:

$tan^{2} 60 = (\sqrt{3}) ^{2} \\2 cos^{2} 60 = 2 (1/2)^{2} \\3/4 sin ^{2} 45 = 3/4(1/\sqrt{2})^{2} \\4 sin^{2} 30 = 4 (1/2)^{2}$

hope it helps...