Show that tan dhita/sec dhita -1 + tan dhita/sec dhita +1= 2 cosec dhita
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Step-by-step explanation:
replace theta by A
tanA/secA-1+tanA/secA+1
=tanA(secA+1)+tanA(secA-1)/sec²A-1
=tanA(2secA)/tan²A
=2secA/tanA
=2×1/cosA×cosA/sinA
=2/sinA
=2cosecA
thankyou
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