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Mathematics 19 Online
OpenStudy (unofficialllyy):

How do similar right triangles lead to the definitions of the trigonometric ratios?

OpenStudy (anonymous):

http://openstudy.com/study#/updates/5356b142e4b0a35b4157cd0f This help?

OpenStudy (unofficialllyy):

Kind of, I could use a better explanation.

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