A) \[{{15}^{o}}\]
B) \[{{30}^{o}}\]
C) \[60{}^\circ \]
D) \[{{45}^{o}}\]
Correct Answer: B
Solution :
\[\cos \theta =\frac{49+16.3-13}{2.7.4\sqrt{3}}\Rightarrow \theta ={{30}^{o}}\].You need to login to perform this action.
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