In triangle ABC, angle C is 90 °, cosA = 0.5 AC = 4, Find AB.
| December 18, 2020 | education
The cosine of an acute angle of a right-angled triangle is equal to the ratio of the adjacent leg to the hypotenuse, i.e. AC / AB
4 / AB = 0.5
AB = 8
Answer: 8
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