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Write csc(x) in terms of cos(x) only. help?

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We use the following identities:
cosecant(x) = 1/sin(x)
1 = sin²x + cos²(x)

csc(x) = 1/sin(x)
csc²(x) = 1/sin²(x)
csc²(x) = 1/(1 - cos²(x))
csc(x) = 1 / √(1 - cos²(x))
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