Pertanyaan

P a d a se g i t i g a A BC d ik e t ah u i p anjan g A B = 3 6 c m , p anjan g BC = 6 c m , d an < C A B = 4 5 ∘ . B es a r < BC A a d a l ah ...

$P a d a se g i t i g a A BC d ik e t ah u i p anjan g A B = 36 c m, p anjan g BC = 6 c m, d an < C A B = 4 5^{\circ} . B es a r < BC A a d a l ah ...$

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Pembahasan

$fraction numerator a over denominator sin A end fraction equals fraction numerator c over denominator sin begin display style C end style end fraction fraction numerator 6 squared over denominator sin begin display style 45 end style begin display style degree end style end fraction equals fraction numerator 3 square root of 6 over denominator sin begin display style C end style end fraction fraction numerator 2 over denominator begin display style 1 half square root of 2 end style end fraction equals fraction numerator square root of 6 over denominator sin begin display style C end style end fraction 2 sin C equals fraction numerator square root of 12 over denominator 2 end fraction 2 sin C equals 2 over 2 square root of 3 sin C equals 1 half square root of 3 left right arrow C equals 60 degree$