Step 18 Precalculus Quiz Review (Solving Trig Equations)

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Solve for all values of x: cos x = 3 cos x – 2

0 + 2npi

Solve for all values of x: 2 sin^2 x – 1 = 0

pi/4, 3pi/4, 5pi/4, 7pi/4 all +2npi

Solve for all values of x: √(cos x) = 2 cos x – 1

0 + 2npi

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