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Mathematics 20 Online
OpenStudy (nali):

find the exact value of the sine cosine and tangent of the angle -225 degrees

OpenStudy (anonymous):

Do you have a calculator with SIN, COS, or TAN on it for future reference?

OpenStudy (anonymous):

Okay, well sine is 0.707106781, cosine is -0.707106781, and tangent is -1

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