a. Show that the equation sintan = 3 can be written in the form cos 2

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a. Show that the equation sinθtanθ = 3 can be written in the form cos2θ + 3 cosθ − 1 = 0.
b. Hence, solve the equation sinθtanθ = 3 for 0° ≤ θ ≤ 360°.

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