MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
\(\sin θ =-\dfrac{4}{5}\) and θ lies in the third quadrant, then \(\cos \dfrac{\theta}{2}\) is equal to: |
| A. | \(\dfrac{1}{\sqrt{5}}\) |
| B. | \(-\dfrac{1}{\sqrt{5}}\) |
| C. | \(\sqrt{\dfrac{2}{5}}\) |
| D. | \(-\sqrt{\dfrac{2}{5}}\) |
| Answer» C. \(\sqrt{\dfrac{2}{5}}\) | |