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2 December, 22:51

Solve the equation cos 3theta=1/2, for theta is R, (where theta is in radians)

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  1. 2 December, 23:24
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    pi/9, 5pi/9

    Step-by-step explanation:

    Cos (3theta) = ½

    3theta = pi/3, 5pi/3

    theta = pi/9, 5pi/9

    Keep on adding 2pi/3 to each to get more angles, if required
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