Question

Evaluate :

2tan ^2 45° + cos ^30° - sin ^360°.​

Answer 1

trigonometric function value

tan

$tan45 = 1 \\ \sin360 = 0 \\ \cos30 = \sqrt{3 \div 2}$

Answer 2

2tan^2 45°+cos30°-sin360°

=2 (1)^2+root (3)/2-0

=2+root (3)/2

=4+root(3)/2