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In a right triangle ABC, tan(a)= 20/21.find sin(a) and cos(a)
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May 11, 2019
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In a right triangle ABC, tan(a)= 20/21.find sin(a) and cos(a)
Geography
high-school
Rand Random
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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
Lawrence Barsanti
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May 17, 2019
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Lawrence Barsanti
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