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Mathematics 22 Online
OpenStudy (anonymous):

If I reduce the evaluation of a trigonomic function, what is the evaluation of the same fucntion at it's reference angle? sin 245* and cos 245*

hero (hero):

What's preventing you from figuring this out on your own?

OpenStudy (anonymous):

I have no idea how to figure it out

hero (hero):

Find the reference angle, then take the sine and cosine of it.

OpenStudy (anonymous):

Sin245 is on the third quadrant on the circle therefore, 245-180=65 degree use your calculaTor to see what is sin65 then sin245 is negatve number because in the third yquad

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