(TanA + sinA )/(tanA - sinA) = (secA +1)/(secA-1)

Proof sum ...that's it !:/
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1 Answer

factor out sinx from the numerator and the denominator on the left

sinx(1/cosx+1)

-----------------------=

sinx(1/cosx-1)

 

secx+1

=------------

secx-1
by Level 8 User (35.3k points)

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