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Question: The angle between the lines $x\cos {{\alpha }_{1}}+y\sin {{\alpha }_{1}}={{p}_{1}}$ and $x\cos {{\alpha }_{2}}+y\sin {{\alpha }_{2}}={{p}_{2}}$ is

1) $({{\alpha }_{1}}+{{\alpha }_{2}})$

2) $({{\alpha }_{1}}\tilde{\ }{{\alpha }_{2}})$

3) $2{{\alpha }_{1}}$

4) $2{{\alpha }_{2}}$

Solution:

Explanation: No Explanation

Angle between two straight lines Bisector of angle between two lines

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