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Mathematics, 17.10.2020 07:01 gthif5424

I need help proving a few trigonometric identities. tanA = tanA * cscA^{2} + cot(-A)



csc^{2} \beta -csc^{2} \beta *sec^{2} \beta = -sec^{2} \beta
cscx+cotx=\frac{sinx}{1-cosx}
(secx+tanx)^{2} = \frac{cscx+1}{cscx-1}

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