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1 May, 01:18

Find the exact value. Sec^2 (11pi/6)

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  1. 1 May, 04:13
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    1 + tan^2 (11pi/6)

    1 + tan^2 (2pi - pi/6)

    1 + tan (2pi - pi/6) * tan (2pi - pi/6)

    tan (2pi) = 0

    tan (pi/6) = 1/sqrt (3)

    Compund angle rule:

    1 + sqrt (3) / 3 * sqrt (3) / 3

    1 + 1/3

    4/3
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