A) \[{{45}^{o}}\]
B) \[{{60}^{o}}\]
C) \[{{90}^{o}}\]
D) \[{{30}^{o}}\]
Correct Answer: C
Solution :
The four vertices on solving are \[A(-3,\,3)\], \[B(1,\,1),\] \[C(1,\,-1)\] and \[D(-2,-2)\].\[{{m}_{1}}\]= slope of \[AC=-1\], \[{{m}_{2}}\]= slope of \[BD=1\]; \\[{{m}_{1}}{{m}_{2}}=-1\]. Hence the angle between diagonals AC and BD is \[90{}^\circ \].You need to login to perform this action.
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