pandamaknae2003
09.10.2019 •
Mathematics
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
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Ответ:
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)
Ответ:
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