1174180
1174180 1174180
  • 21-05-2017
  • Mathematics
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mreijepatmat
mreijepatmat mreijepatmat
  • 21-05-2017
La of sine:

sinC/c = sinB/b==> sin  37°/8 = sin B/12 ==> sin B = 0.903


arcsinB or sin⁻¹ B = 64.5°, & sin (B°) = sin (180° - B°), then

sin(64.5) = sin(180°-64.5°) ==> B = 64.5° or 115.5°
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