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abbyl94:
Group Title
cos^2x = cos x solve each equation for principal values of x. express solutions in degrees
 updated one year ago
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abbyl94:
Group Title
cos theta = 4/5, 0˚< theta < 90˚ use the information given to find sin2theta, cos2theta, and tan 2theta
 updated one year ago
 15 replies
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abbyl94:
Group Title
how to prove each equation is not a trigonometric identity by producing a counterexample. sin theta cos theta = cot theta
 updated one year ago
 14 replies
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