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22 September, 01:41

Find cscx if sinx+cotx cosx = sqrt3

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  1. 22 September, 05:32
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    The answer is (d) ⇒ cscx = √3

    Step-by-step explanation:

    ∵ sinx + (cotx) (cosx) = √3

    ∵ sinx + (cosx/sinx) (cosx) = √3

    ∴ sinx + cos²x/sinx = √3

    ∵ cos²x = 1 - sin²x

    ∴ sinx + (1 - sin²x) / sinx = √3 ⇒ make L. C. M

    ∴ (sin²x + 1 - sin²x) / sinx = √3

    ∴ 1/sinx = √3

    ∵ 1/sinx = cscx

    ∴ cscx = √3
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