A) \[{{0}^{o}}\]
B) \[{{45}^{o}}\]
C) \[{{60}^{o}}\]
D) \[{{\tan }^{-1}}(-2)\]
Correct Answer: D
Solution :
\[{{m}_{1}}+{{m}_{2}}=\frac{2\tan A}{-1}=4\] \[\Rightarrow \tan A=-2\Rightarrow \angle A={{\tan }^{-1}}(-2)\] .You need to login to perform this action.
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