Report - MATHEMATICS - Narayana Group of Educational …. 2 4 tan 2tan 4cot 5 5 5 (1) cot 5 (2) 2 cot 5 (3) 3 cot 5 (4) 4 cot 5 KEY: 1 HINT: cotA - tanA = 2 cot2A 22. If sinA sinB sinC 0 and

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