Question

The value of $\cos 1200^{\circ }+\tan 1485^{\circ }$ is

• A. $\frac{1}{2}$
• B. $\frac{3}{2}$
• C. $-\frac{3}{2}$
• D. $-\frac{1}{2}$

Answer 1

Answer: (A)

$\cos \left(3\times 360^{\circ }+120^{\circ }\right)+\tan \left(4\times 360^{\circ }+45^{\circ }\right)$
$=\frac{1}{2}$