Question

Given a possible triangle ABC with a=5, b=11, and A=23 degrees, find a possible value for angle b. Round to the nearest tenth. A. 10.2° B. 11.2° C. 59.3° D. no solution Please select the best answer from the choices provided

Answer 1

Using the law of the sine, we have the following relationship:
 Sine (A) / a = Sine (B) / b
 Substituting values we have:
 Sine (23) / 5 = Sine (B) / 11
 Clearing we have:
 (Sine (23) / 5) * (11) = Sine (B)
 B = Asine ((Sine (23) / 5) * (11))
 B = 59.27 degrees
 Rounding off we have:
 B = 59.3 degrees
 Answer:
 C. 59.3 °