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The angle of intersection of the para...

The angle of intersection of the parabola `y^2=4\ a x` and `x^2=4a y` at the origin is `pi//6` (b) `pi//3` (c) `pi//2` (d) `pi//4`

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Given,`y^2=4ax` and `x^2=4ay`
For first parabola,
→`dy/dx​=2a/y`
​ ...
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