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Question: The angle between the lines $2x-y+3=0$ and $x+2y+3=0$ is

1) ${{90}^{o}}$

2) ${{60}^{o}}$

3) ${{45}^{o}}$

4) ${{30}^{o}}$

Solution:

Explanation: No Explanation

Angle between two straight lines Bisector of angle between two lines

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