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In a right triangle ABC, tan(a)= 20/21.find sin(a) and cos(a)
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In a right triangle ABC, tan(a)= 20/21.find sin(a) and cos(a)

User Rand Random
by
6.1k points

1 Answer

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sin(a)=opposite/hypotenuse
∴hypotenuse=√20²+21²
=√400+441
=√841
=29
∴sin(a)=20/29
=0.6897

cos(a)=adjascent/hypotenuse
=21/29
=0.7241
User Lawrence Barsanti
by
5.9k points
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