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19 December, 22:44

Verify the basic identity. What is the domain of the validity?

cot x = cos x csc x

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  1. 19 December, 22:47
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    Expand and simplify LHS - Apply identity sin^2x+cos^2x = 1 To verify: (cotx - cscx) (cosx+1) = - sinx LHS = (cosx/sinx - 1/sinx) (cosx + 1)
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