In the triangle ABC, the angle C of the straight line BC is 4, the sine A is 0.8. Find AB.
| September 4, 2021 | education
In order to solve the problem, we apply the theorem:
The sine of the angle is equal to the ratio of the opposite leg to the hypotenuse:
SinA = CB: AB, where CB is the opposite leg, AB is the hypotenuse.
Substitute the known values:
0.4 = 8: AB.
Next, we look for the unknown AB:
0.4 * AB = 8;
AB = 8: 0.4;
AB = 20.
Answer: AB = 20.
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