February 2019 1 142 Report
Diketahui segitiga abc dengan sin a = 5/13 dan sin b = 4/5. jika sudut b adalah sudut tumpul, maka nilai dari tan (A-B) adalah....
a - \frac{63}{16}
b.- \frac{33}{68}
c. - \frac{63}{33}
d. - \frac{63}{16}
e.- \frac{68}{16}

mohon disertai caranya


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