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(1-tanx)(1-cotx)=2-secxcscx
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(1-tanx)(1-cotx)=2-secxcscx

User Yehonatan Yehezkel
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(1-tanx)(1-cotx)=2-secxcscx


1 - tanx - cotx + 1 = 2 - secxcscx

2 - tanx - cotx = 2 - 1/(sinxcosx)

tanx + cotx = 1/(sinxcosx)

sin^2(x) + cos^2(x) = 1

User Khaled Alam
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