express cosec A in terms of sec A(without calculating sin A)
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Step-by-step explanation:
1 + tan²A = sec²A
=> sec A = √( 1 + tan² A)
=> sec A = √( 1 + 1/cot²A)
=> sec A = √[ (cot²A + 1)/cot²A ]
=> sec A = √ [ cosec²A / cosec²A - 1 ]
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