In triangle ABC, angle C is 90 degrees BC = 8 sin A = 0.4 Find AB.
| February 27, 2021 | education
The sine of the angle is the ratio of the opposite leg to the hypotenuse. In our right-angled triangle, AB is the hypotenuse, and CB is the leg, which is opposite to angle A.
Then sinA = CB / AB;
hence AB = CB / sinA;
substituting our values, we get AB = 8 / 0.4 = 20 (cm).
Answer: 20cm.
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