Friday, August 12, 2011

Trig Identities Help?

First, draw a diagram. With tangent, it's opposite/adjacent. So those two are in. And cosine is adjacent/hypotenuse, so you get that. After that, it's a simple matter of using the diagram to find the others. For example, sin is opposite/hypotenuse, so it would be (sqroot of 35)/6. Then continue from there, substituting the values in. If you don't know the identities (i.e. tan x = opposite/adjacent), just look in your math book. I'm sure there there.

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