In triangle ABC, angle C = 90 degrees, BC = 21, sinA = 7/9. find AB
| August 10, 2021 | education
In a right-angled triangle, the sine of an acute angle is the ratio of the length of the opposite leg to the length of the hypotenuse.
SinBAC = BC / AB.
AB = BC / SinBAC = 21 / (7/8) = 21 * 8/7 = 24 cm.
Answer: The length of the hypotenuse AB is 24 cm.
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