निम्न के मान निकालिए:
sin 60° cos 30° + sin 30° cos 60°

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Solution

sin 60°. cos 30° + sin 30°. cos 60°
=

fraction numerator square root of 3 over denominator 2 end fraction cross times fraction numerator square root of 3 over denominator 2 end fraction plus 1 half cross times 1 half

equals space open parentheses fraction numerator square root of 3 over denominator 2 end fraction close parentheses squared plus open parentheses 1 half close parentheses squared

equals space 3 over 4 plus 1 fourth equals space fraction numerator 3 plus 1 over denominator 4 end fraction equals 4 over 4 equals 1

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