Answer:
AC = 3,76
Explanation:
Sin70 = AC/AB
Sin 70 = AC/4
AC = Sin70×4
AC = 3.76
take 70 degree as reference angle
using sin rule
sin 70 = opposite / hypotenuse
0.939 = AC /4
0.939 * 4 = AC
3.756 = AC
3.76 = AC
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