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unit vector?

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i want my cannons in my game to recoil. im going to need the unit vector of their aim to get this. if i have their rotation (angle) how would i get a unit vector? im thinking this: tan(theta) = y / x; i could make x = 1; so tan(theta) = y which would mean the vector for that direction would be < 1, tan(theta) >.... is this a unit vector? if not, how do i find one off just an angle?

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Guest Anonymous Poster
cos(theta) = x / h
sin(theta) = y / h

Make h (the hypotenuse) 1 and you have your vector.

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oh for the love of christ.

i got an A in college calculus at virginia tech and i couldnt figure that out... wow. brain fart.

*throws away page of vector computations*

thanks.

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This topic is 4534 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

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