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6 February, 17:18

Solve: 2sec (x) + 5 = 9 Which equation is equivalent to the given equation?

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  1. 6 February, 20:20
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    To solve the expression we proceed as follows:

    2sec (x) + 5=9

    but

    sec (x) = 1/sin x

    hence, the equation will be:

    2/sin x+5=9

    2/sin x=4

    1/sin x=2

    thus

    sin x=0.5

    hence

    x=30° or 150°
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