Find the solution set on [270°, 720°] sin2x + 2sinx + cos² (x/2) = 0. Hint: cos (x/2) = (1+cosx)/2; sin2x =2sinxcosx Angle 1 = degrees Angle 2 = degrees Angle 3 = degrees Angle 4 = degrees
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First, let's simplify the equation by multiplying everything by 2 to get rid of the fraction: 2sin(2x) + 4sin(x) + cos(2x) = 0 Show more…
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