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Geometry (all content)

Course: Geometry (all content) > Unit 13

Lesson 9: The law of sines
Math
Geometry (all content)
Trigonometry
The law of sines
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Solve triangles using the law of sines

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Problem

The following figure shows △ABC with side lengths to the nearest tenth.
Triangle ABC. Side AB measures 25 units and side BC measures 10 units. Angle A is 22 degrees.
Find m∠C.
Note that m∠C is obtuse. Round to the nearest degree.
m∠C=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
°
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