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Evaluate : Cos 22 ° Sin 68 °

Evaluate : `(cos22°)/(sin 68°)`

Sum

`(cos22°)/(sin 68°)`

= `cos(90° - 68°)/(sin68°)`

= `(sin 68°)/(sin68°)`

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Chapter 21: Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] - EXERCISE 21 (F) [Page 334]

Chapter 21 Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals]
EXERCISE 21 (F) | Q 2. (i) | Page 334

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