September 2023 1 5 Report
1.Tunjukkan bahwa:

a.sin(A + B)/(sin(A - B) = (tan A + tan B)/(tan A - tan B)
b.sin(A + B)/(sin A sin B) = cotan A + cotan B
c.sin(A - B)/(sin A sin B) = cotan B - cotan A
d.sin(A - B)/(cos A cos B) = tan A - tan B

tolong dijawab ya kak​

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