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Ex 8.3, 1 - Evaluate (i) sin 18 / cos 72 (ii) tan 26/cot 64 - Trignometric ratios of complementry angles

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Ex 8.3, 1 Evaluate : (i) sin 18 /cos 72 sin 18 /cos 72 = sin 18 /cos (90 18 ) = sin 18 /(sin 18 ) = 1

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.