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05.11.2019 •
Mathematics
Find the area of the triangle. round your answer to the nearest tenth. triangle abc line ab =15 yd, line ac = 15 yd, ∠a= 48° a. 112.5 yd2 b. 167.2 yd2 c. 124.9 yd2 d. 83.6 yd2
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Ответ:
A = 83.6 yd² ⇒ answer (d)
Step-by-step explanation:
∵ AB = 15 , AC = 15 and m∠A = 48°
∵ Area of the Δ by using sin Rule
∴ A = 1/2 × S1 × S2 × sin including angle between two sides
∴ A = 1/2 × 15 × 15 × sin48 = 83.6 yd² ⇒ answer (d)
Ответ: