Answer:
Explanation:
cos30 = j / 20√3
j = (20√3)cos30
j = (20√3)(½√3)
j = 30
j = 17.32 sq rt 3 or 30
sin 60 = j/20sq rt 3
0.8660 = j/20sq rt 3
j = 17.32 sq rt 3
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