Question

If $sin\alpha +sin \beta = \frac{\sqrt6}2$ and $cos \alpha + cos\beta = \frac{\sqrt2}2$ then $coas(\alpha - \beta)$ is equa; to

• A. $\frac1{2}$
• B. $\frac{{3}}{2}$
• C. $\frac{-1}{2}$
• D. $\frac{-3}{2}$
• E. 0

Answer 1

Answer: (E)

0

Answer 2

The correct option is (E): 0