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Nilai dari sin 1 5 ∘ adalah....

Nilai dari  adalah....

  1. open parentheses 1 half square root of 2 close parentheses open parentheses square root of 3 minus 1 close parentheses

  2. open parentheses 1 fourth square root of 2 close parentheses open parentheses square root of 3 minus square root of 2 close parentheses

  3. open parentheses 1 fourth square root of 2 close parentheses open parentheses square root of 3 minus 1 close parentheses

  4. open parentheses 1 fourth square root of 3 close parentheses open parentheses square root of 2 minus 1 close parentheses

  5. open parentheses 1 fourth close parentheses open parentheses square root of 3 minus 1 close parentheses

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R. RGFLSATU

Master Teacher

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sin space open parentheses straight A minus straight B close parentheses equals sin space straight A space cos space straight B minus cos space straight A space sin space straight B sin space 15 degree equals sin open parentheses 45 degree minus 30 degree close parentheses space space space space space space space space space space space space space equals sin space 45 degree space cos space 30 degree minus cos space 45 degree space sin space 30 degree space space space space space space space space space space space space space equals open parentheses 1 half square root of 2 close parentheses open parentheses 1 half square root of 3 close parentheses minus open parentheses 1 half square root of 2 close parentheses open parentheses 1 half close parentheses space space space space space space space space space space space space space equals open parentheses 1 fourth square root of 6 close parentheses minus open parentheses 1 fourth square root of 2 close parentheses space space space space space space space space space space space space space equals open parentheses 1 fourth square root of 2 close parentheses open parentheses square root of 3 minus 1 close parentheses

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