cjjohnson1221
22.01.2020 •
Mathematics
calculate the side lengths a and b to two decimal places.
a. a = 11.40 and b = 13.38
b. a = 11.71 and b = 15.56
c. a = 4.18 and b = 3.15
d. a = 10 and b = 14
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Ответ:
b
Step-by-step explanation:
ITS FOR MY A P E X PEOPLE
ALSO STEPS BELOW
* In ΔABC
∵ m∠A = 45°
∵ m∠B = 110°
∴ m∠C = 180 - 45 - 110 = 25°
By using the sin Rule
∵ a/sin(A) = b/sin(B) = c/sin(C)
∵ c = 7
∴ a/sin(45) = b/sin(110) = 7/sin(25)
∴ a = (7 × sin(45)) ÷ sin(25) = 11.71
∴ b = (7 × sin(110)) ÷ sin(25) = 15.56
∴ The answer is (D)
Ответ:
aloha
Step-by-step explanation: