Given triangle ABC, A = 120°, a = 8, b = 3; determine B to the nearest whole degree. Do not use a decimal point or extra spaces
in the answer or it will be marked incorrect.
2 answers:
The answer is 45
8/120. = 3/x cross multiply
Answer:
∠B = 19°
Step-by-step explanation:
In the triangle ABC,
∠A = 120° side a = 8 and b = 3
We have to find angle B.
We will apply sine rule in this triangle
8 sin B = 3 sin 120°
Sin b = (sin 120°) = = 0.3248
B = sin⁻¹ (0.3248)
= 18.95 ≈ 19°
Therefore, ∠B = 19° is the answer.
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