Find the exact values of sin A and cos A. Write fractions in lowest terms. A right triangle ABC is shown. Leg AC has length 21, leg BC has length 28, and hypotenuse AB has length 35.

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asked Feb 18, 2018 52.6k views

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Find the exact values of sin A and cos A. Write fractions in lowest terms. A right triangle ABC is shown. Leg AC has length 21, leg BC has length 28, and hypotenuse AB has length 35.

Mathematics
high-school

Longwalker asked

by Longwalker

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sin A = opposite / hypotenuse = BC / AB = 28/35 = 4/5

cos A = adjacent /hypotenuse = AC/AB = 21 / 35 = 3/5

Xiaolei answered Feb 19, 2018

by Xiaolei

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sinA=BC/AB=28/35=4/5; cosA=AC/AB=21/35=3/5.

Beyka answered Feb 22, 2018

by Beyka

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