Question: Question 28 > For sin 2x + cos x = 0, use a double-angle or half-angle formula to simplify the equation and then find

Question 28 > For sin 2x + cos x = 0, use a double-angle or half-angle formula to simplify the equation and then find all solutions of the equation in the interval [0, 2). The answers are x1 = x2 = x3 = and x4 = with x1 x2 < x3 < x4. Question Help: Worked Example 1 Submit Question 23

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