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Diketahui $A$ dan $Bm$ merupakan sudut lancip. Jika $sinA=\dfrac {2} {\sqrt{5} }$ $dancosB=\dfrac {4} {5}$ Nilai dari $sin\left(A-B\right)$ adalah $...$ a. $\dfrac {1} {25}\sqrt{5} $ $\dfrac {2} {25}\sqrt{5} $ c. $\dfrac {1} {5}\sqrt{5} $ d. $\dfrac {2} {5}\sqrt{5} $ e. $5\sqrt{5} $
10th-13th grade
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Search count: 107
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Qanda teacher - Shewta
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