A) \[\pi /3\]
B) \[\pi /2\]
C) \[3\pi /2\]
D) \[\pi /4\]
Correct Answer: D
Solution :
Here, Slope of Ist diagonal= \[{{m}_{1}}=\frac{2-0}{2-0}=1\Rightarrow {{\theta }_{1}}={{45}^{o}}\] Slope of IInd diagonal= \[{{m}_{2}}=\frac{2-0}{1-1}=\infty \Rightarrow {{\theta }_{2}}={{90}^{o}}\] Þ\[{{\theta }_{2}}-{{\theta }_{1}}={{45}^{o}}=\frac{\pi }{4}\].
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