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find the value of: cos2 60° + sin2 30° - Mathematics

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प्रश्न

find the value of: cos2 60° + sin2 30°

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उत्तर

cos2 60° + sin2 30° = `(1/2)^2 + (1/2)^2 = (1)/(4) + (1)/(4) = (1)/(2)`

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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 1.3 | पृष्ठ २९१
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