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OpenStudy (anonymous97):
If sin Θ = 2 over 7 and tan Θ > 0, what is the value of cos Θ?
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OpenStudy (anonymous):
so do you know SOHCAHTOA?
OpenStudy (anonymous):
so if opposite over hypotenuse is 2/7 then cos is...
OpenStudy (anonymous):
it is still 2/7
OpenStudy (anonymous):
because sin and cos of one angle is the same
OpenStudy (welshfella):
one way to do it would be to use the identity cos^2 x = 1 - sin^2 x
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OpenStudy (anonymous):
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OpenStudy (anonymous):
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