SOLUTION: Find the exact value of sin θ, if cos θ = and θ lies in quadrant IV.
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Question 623543: Find the exact value of sin θ, if cos θ = and θ lies in quadrant IV.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
In general,
\ =\ \pm\sqrt{1\ -\ \cos^2(\varphi)})
But )
is positive in QIV, so
\ =\ \sqrt{1\ -\ \cos^2(\theta)})
John
My calculator said it, I believe it, that settles it
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