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What is the area of a triangle with angle A equals 38 degrees angle B equals 63 degrees and side c equals 15?
Wiki User
∙ 13y ago
Angle C must equal 79 degrees because there are 180 degrees in a triangle.
Use the sine rule to find side b:
15/sin79 = b/sin63
b = 15*sin63/sin79 = 13.61524832 units
Use 1/2*c*b*sin38 to find the area:
1/2*15*13.61524832*sin38 = 62.86787901 square units
Wiki User
∙ 13y ago
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