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OpenStudy (anonymous):
prove: cot^2(w)/csc(w) -1 = csc(w) +1
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OpenStudy (anonymous):
cot^2 = csc^2-1 csc^2-1/csc-1 = csc+1 (csc+1)(csc-1)/csc-1 = csc+1
OpenStudy (anonymous):
kk got it from here, thank you
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