Use the law of sines. find b to the nearest tenth. a. 45.0 b. 81.4 c. 65.4 d. 90.4 triangle cba line cb is 73 ∠b= 56°, ∠a=48°, b is a line between ac

b = 81.4 ⇒ answer (b)

Step-by-step explanation:

∵ In ΔABC

∵ CB = 73 , m∠B = 56° , m∠A = 48°

∵ AC = b

By using sin Rule:

∵ b/sinB = BC/sinA

∴ b/sin56 = 73/sin48

∴ b = (73 × sin56) ÷ sin48 = 81.4 ⇒ answer (b)

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step-by-step explanation:

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step-by-step explanation:

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