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Today, 09:05

7 cos x+1=6 secx solve for x

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  1. Today, 12:24
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    7cos (x) + 1 = 6sec (x)

    7cos (x) + 1 = 6/cos (x)

    7cos^ (x) + cos (x) = 6

    7cos^ (x) + cos (x) - 6 = 0

    [7cos (x) - 6][cos (x) + 1] = 0

    cos (x) = 6/7, x = arccos (6/7) and

    cos (x) = - 1, x = 180
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