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Find the exact value of the trigonometric function. sec7*pi/6?

by Guest44604  |  earlier

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Find the exact value of the trigonometric function. sec7*pi/6?

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  1. sec  w = 1/cos w

    if w = pi/6 or 30 deg

    cos(30 deg) = sqrt(3)/2

    cos(7 * 30 deg) = cos (210 deg) = - sqrt(3)/2

    sec(210 deg) = - 2/sqrt(3)

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