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प्रश्न
Evaluate : `(cos22°)/(sin 68°)`
बेरीज
उत्तर
`(cos22°)/(sin 68°)`
= `cos(90° - 68°)/(sin68°)`
= `(sin 68°)/(sin68°)`
=1
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Complementary Angles for Sine ( Sin ) and Cosine ( Cos )
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