The acute angle between the lines $x-y=0$, and $y=0$ is

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Aicharya · Accepted Answer

Equation of given lines $x-y=0$ and $y=0$. $ \begin{aligned} 	heta & =\cos ^{-1}\left(\frac{|1 	imes 0-1 	imes 1+0 	imes 0|}{\sqrt{1+1} \sqrt{1}}ight) \ & =\cos ^{-1}\left(\frac{1}{\sqrt{2}}ight)=\frac{\pi}{4} \end{aligned} $

The acute angle between the lines $x-y=0$, and $y=0$ is

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