How do I decide when to use sin, cos, or tan? I know the ratios for each one and I can recognize the parts of a triangle, I just don't know how you decide which one to use in a problem.

Question

zepdrix · Answer

|dw:1457374652198:dw|Well you're generally given an angle, and a side length,
and asked to find another side length, right? :)

zepdrix · Answer

Example drawn above.

zepdrix · Answer

Let's label these three sides `in relation to where the angle is positioned`.

zepdrix · Answer

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