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OpenStudy (anonymous):
Find cos(θ) if sin(θ) is given and θ terminates in QIII.
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OpenStudy (anonymous):
sin (theta) = -((sqrt15)/8)
OpenStudy (anonymous):
Are you allowed to use the arcsine function? You could take the arcsine and find the theta and then simply do cos (theta).
OpenStudy (anonymous):
I figured it out!! Thanks anyway, man (or woman)! Haha!
OpenStudy (anonymous):
I realized that 8 would be the bottom number, so I used the Pythagorean Theorem. :)
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