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Nilai dari sin 12 0 0 + cos 30 0 0 cos 15 0 0 − sin 12 0 0 = ....

Nilai dari $\frac{cos 15 0 ^{0} - sin 12 0 ^{0}}{sin 12 0 ^{0} + cos 30 0 ^{0}} =$ ....

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$fraction numerator cos 150 to the power of 0 minus sin 120 to the power of 0 over denominator sin 240 to the power of 0 plus cos 210 to the power of 0 end fraction equals fraction numerator cos space open parentheses 180 to the power of 0 minus 30 to the power of 0 close parentheses minus sin space open parentheses 180 to the power of 0 minus 60 to the power of 0 close parentheses over denominator sin space open parentheses 180 to the power of 0 plus 60 to the power of 0 close parentheses plus cos space open parentheses 180 to the power of 0 plus 30 to the power of 0 close parentheses end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator short dash cos space open parentheses short dash 30 to the power of 0 close parentheses minus sin space 60 to the power of 0 over denominator short dash sin space 60 to the power of 0 plus cos open parentheses 30 to the power of 0 close parentheses end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator short dash begin display style fraction numerator square root of 3 over denominator 2 end fraction end style minus begin display style fraction numerator square root of 3 over denominator 2 end fraction end style over denominator short dash begin display style fraction numerator square root of 3 over denominator 2 end fraction end style plus open parentheses short dash begin display style fraction numerator square root of 3 over denominator 2 end fraction end style close parentheses end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space fraction numerator begin display style fraction numerator short dash 2 square root of 3 over denominator 2 end fraction end style over denominator begin display style fraction numerator short dash 2 square root of 3 over denominator 2 end fraction end style end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space fraction numerator short dash 2 square root of 3 over denominator 2 end fraction cross times fraction numerator short dash 2 over denominator 2 square root of 3 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 1$