In triangle ABC, angle C is 90, AB = 25, AC = 15. Find sinА
| March 25, 2021 | education
The sine of an angle is the ratio of the opposite leg to the hypotenuse.
By the Pythagorean theorem:
BC = √ (AB² – AC²) = √ (625 – 225) = √400 = 20;
sin A = BC / AB = 20/25 = 4/5 = 0.8.
Answer: sin A is 0.8.
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