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Prove that: sin 60° cos 30° + cos 60° . sin 30°  = 1 - Mathematics

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प्रश्न

Prove that:

sin 60° cos 30° + cos 60° . sin 30°  = 1

बेरीज
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उत्तर

LHS =sin 60° cos 30° + cos 60°. sin 30°

= `(sqrt3)/(2) (sqrt3)/(2) + (1)/(2) (1)/(2) = (3)/(4) + (1)/(4) = 1 = RHS`

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पाठ 23: Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] - Exercise 23 (A) [पृष्ठ २९१]

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सेलिना Concise Mathematics [English] Class 9 ICSE
पाठ 23 Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]
Exercise 23 (A) | Q 3.1 | पृष्ठ २९१
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