Question

Hello I am once again asking for help ASAP

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4. In triangle ABC, AC=11,BC=24, and m
a. 40
b. 46.3
c. 20.5
d. 23.7

Answer 1

23.7°

Explanation:

To obtain the value of AB ; Use the cosine rule ;

Recall:

c² = a² + b² - 2ab Cos C

c² = 24² + 11² - 2*24*11 Cos75

c² = 576 + 121 - 528 * 0.2588190

c² = 697 - 136.656432

c² = 560.343568

c = sqrt(560.343568)

c = 23.6715

Hence, c = AB = 23.7°