Question

Which is greater sin40 or cos40

Answer 1

The greater is cos 40
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Answer 2

Obviously Cos40° is greater. U can observe it from their curves only. And if u want to do it mathematically. Then write cis 40° as Sin(90°-40°) =sin50° as sin is an increasing funcⁿ in [0,90°] sin50°>sin40° i e. Cos40°>sin40°
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