The angle between the tangents drawn from the point (-a, 2a) to `y^2`=

1.	The angle between the tangents drawn from the point (-a, 2a) to `y^2`=4ax is
Answer» `y^2=4ax` `y=mx+a/m` `2a=-ma+a/m` `2=(-m+1)/m` `m^2+2m-1=0` `tantheta=\|(m_1-m_2)/(1+m_1m_2)\|` `tanttheta=1/0=oo` `theta=pi/2`.

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The angle between the tangents drawn from the point (-a, 2a) to `y^2`=4ax is

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