I tried to do this but I dont get the answer as in the book...(adsbygoogle = window.adsbygoogle || []).push({});

A line passes through point (0,4). Its first direction angle is 60°, meaning alpha is 60°.

I found that the second direction angles are 30° and 150° thats is beta is 30° and 150°. But what are the parametric equations of the line for each set of direction angles?

Thx any help appreciated

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# Equation of a line

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