sec a minus one upon sec a + 1 is equal to 1 minus Cos A upon 1 + Cos A
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Answer:
LHS: secA-1/secA+1
Step-by-step explanation:
(1/cosA) -1 upon (1/cosA) +1
=(1-cosA)/cosA upon (1+cosA)/cosA
=(1-cosA) upon (1+cosA)
=RHS
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