MCQOPTIONS
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MCQOPTIONS
| 1. |
2 cos 75 cos 15 =____________________ |
| A. | ( frac{ sqrt{3}}{ sqrt{2}} ) |
| B. | ( frac{1}{2} ) |
| C. | ( frac{ sqrt{3}}{2} ) |
| D. | ( frac{1}{ sqrt{2}} ) |
| Answer» C. ( frac{ sqrt{3}}{2} ) | |