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Let \( \theta\) be an angle so that \(\sin(\theta) = 4/5\)\(\)

and \(\cos(\theta) =3/5\). If that's the case, what are \(\cos\left(\theta - \pi\right), \cos\left(\theta - \frac{\pi}{2}\right)\)in that order?

 Mar 25, 2021
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cos (theta - pi) = -3/5 and cos (theta - pi/2) = -4/5.

 Mar 26, 2021

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