Suppose that a trigonometric curve is defined by the equation f(x) = 3-4 sin(2x + k)° where k is a constant such that -90° k 90°. Suppose that the curve passes through the point with coordinates (15,5). a) Find the value of k. b) Solve the equation f(x) = -1. 0≤x≤ 360° x Submit part Submit part

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