CUET Preparation Today
What is the value of cos($-\frac{17π}{3}$)? |
1 $\frac{\sqrt{3}}{2}$ $\frac{1}{2}$ 0 |
$\frac{1}{2}$ |
cos($-\frac{17π}{3}$) = cos($-6π + \frac{π}{3}$) = cos($6π - \frac{π}{3}$) (because cos(-A) = cosA) = cos($\frac{π}{3}$) = $\frac{1}{2}$ |
