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Download Factor a trinomial: 2 cos 2x + cos x 1 = 0 when 0 ≤ x < 2π
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Transcript
PreCalc: Monday, 5‐1 5.5 day 3 Solving Trig Equations Factor a trinomial: 2 cos 2x + cos x 1 = 0 when 0 ≤ x < 2 π Think of this equation as _______________ and use "Xbox" method. Solve using square roots: 4 sin 2x 1 = 0 when 0 ≤ x < 2 π Move all terms to one side of the equation and solve: tan x sin 2x = 3 tan x when 0 ≤ x < 2 π
