1.

If $$\sin \left( {\theta+ {{30}^ \circ }} \right) = \frac{3}{{\sqrt {12} }}{\text{,}}$$then find $${\text{co}}{{\text{s}}^2}\theta ?$$

A. $\frac{1}{4}$$
B. $\frac{3}{4}$$
C. $\frac{{\sqrt 3 }}{2}$$
D. $\frac{1}{2}$$
Answer» C. $\frac{{\sqrt 3 }}{2}$$


Discussion

No Comment Found

Related MCQs