A) \[{{45}^{o}}\]
B) \[{{60}^{o}}\]
C) \[{{120}^{o}}\]
D) None of these
Correct Answer: D
Solution :
\[\cos \gamma =\sqrt{1-\frac{3}{4}-\frac{1}{2}}=\sqrt{\frac{-1}{4},}\] Which is not possible.You need to login to perform this action.
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