of the river. It is found that B=97 and C=18. Find AB
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A = 180 - (97 + 18) = 65°
From the law of sines,
AB / sin C = BC / sin A ==> AB = BC sin C / sin A
AB = 210 sin 18 / sin 65 = 71.6 (Answer)
From the law of sines,
AB / sin C = BC / sin A ==> AB = BC sin C / sin A
AB = 210 sin 18 / sin 65 = 71.6 (Answer)