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Mathematics 21 Online
OpenStudy (anonymous):

Find the remaining trigonometric ratios: cos(x) = -1/5, pi

OpenStudy (calculusfunctions):

First, based on the restriction, decide in which quadrant your triangle is in.

OpenStudy (calculusfunctions):

Tell me which one.

OpenStudy (anonymous):

Quadrant 3?

OpenStudy (calculusfunctions):

Yes! Now what do you know about all the trig ratios in quadrant III?

OpenStudy (anonymous):

sin(x)=-2sqrt6/5?

OpenStudy (anonymous):

not really, i am struggling

OpenStudy (calculusfunctions):

That's good! You're right!|dw:1379731693292:dw|

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