jika sin A = 3/5 dan cot B = 24/7 maka sin (A-B) adalah...
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jika sin A = 3/5 dan cot B = 24/7 maka sin (A-B) adalah...
1 Jawaban
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1. Jawaban ghiffariahmadijaya
sinA=3/5, cosA=4/5, cotB=24/7, cosB/sinB=24/7
cosB=24/25, sinB=7/25
sin(A-B)=sinAcosB-cosAsinB
=(3/5)(24/25)-(4/5)(7/25)
=72/125 - 28/125
=44/125