The equation of a tangent to the parabol...

The equation of a tangent to the parabola, `x^(2) = 8y`, which makes an angle `theta` with the positive direction of x-axis, is:

`x=y cot theta + 2 tan theta`

`x = y cot theta -2 tan theta`

`y = x tan theta -2 cot theta`

`y = x tan theta + 2 cot theta`

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