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posted by Shasha on Tuesday, November 27, 2012 at 11:20pm.
Simplify the expression: tan(-x)csc(x)
Use some trig identities: tan(-x) = tan(x) csc(x) = 1/sin(x) tan(x) = sin(x)/cos(x) tan(-x)*csc(x) = tan(x)*(1/sin(x) = (sin(x)/cos(x))*(1/sin(x) = 1/cos(x) = sec(x)
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