secA + tanA=
1/
secA - tan A
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Step-by-step explanation:
multiply (secA - tan A ) with numerator and denominator
(secA + tanA ) * (secA - tan A) / 1*(secA - tan A)
(sec^2 - tan^2 )/ secA - tan A {tan^2 +1= sec^2} {sec^2 -tan^2 =1}
1/secA - tanA
LHS = RHS
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