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(पा) €05 60°x cos 30° + sin 60° x sin 30° |
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Answer» cos 60° = 1/2 cos 30° = √3/2 sin 60° = √3/2 sin 30° = 1/2 According to question, cos 60° × cos 30° + sin 60° × sin 30° cos ( 60° - 30°) = cos(30°) = 1/2 |
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