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Mathematics 13 Online
OpenStudy (anonymous):

More trig functions. See picture below!

OpenStudy (anonymous):

OpenStudy (phi):

This explains pretty well the 3 main trig functions http://www.khanacademy.org/math/trigonometry/v/basic-trigonometry

OpenStudy (anonymous):

Holy crap I'm dumb. This is just doing opposite/hypotenuse, adjacent/opposite and adjacent/hypotenuse using theta as the angle.

OpenStudy (phi):

you also have to use pythagoras to figure out the hypotenuse. And you have to know all the definitions. Lots to know. cot = 1/tan (or flip the ratio) sec = 1/cos csc = 1/sin

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