Trigonometry

[quackquack]

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How in depth is the trigonometry on the OAT?

I have an old DAT book and the trig section is really brief and the only identities it tells me to know are the 3 Pythagorean ones (ie. 1+tan^2x = sec^2x etc.).

Also, do I need to know the cosine rules etc.? Again, the book doesn't mention them at all.

 

[lsmc888]

yeah, the only identities i saw were the ones with the sin^2 x + cos^2 x = 1 and versions like that
u do need to know how to get sin cos etc from a triangle obviously. other than that, its the obvious ones that you need to know