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Mathematics 22 Online
OpenStudy (anonymous):

I have to find the value of many different trig functions using only coterminal angles. I know to find coterminal angles I just add or subtract 360. How would this help me find the value of (this is an example of the first type of problem I have to do) sin300?

OpenStudy (anonymous):

take a look at the trig cheat sheet attached. find 300 degrees on the unit circle. first coordinate is cosine, second is sine

OpenStudy (anonymous):

And what about tan and the other 3?

OpenStudy (anonymous):

tan is sine over cosine, or second coordinate over first

OpenStudy (anonymous):

take a look at "unit circle" definition on top right of first page of cheat sheet

OpenStudy (anonymous):

How is this going to help me on the test when I have no unit circle with me? It's obvious there is some knowledge I'm supposed to be able to apply to get the answer here.

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