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PolarNik [594]
3 years ago
7

Tan 21 degrees = 9/x

Mathematics
1 answer:
REY [17]3 years ago
5 0

Answer:

23.4458015822

Step-by-step explanation:

tan(21) = 9/x

9/tan(21) = x

9/tan(21) = 23.4458015822

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3 years ago
A rectangle has a perimeter of 30 ft. Find a function that models its area A in terms of the length x of one of its sides. What
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Step-by-step explanation:

Let the other side of the rectangle be y. The perimeter of the rectangle is expressed as P = 2(x+y)

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The function that models its area A in terms of the length x of one of its sides is A = 15x-x²

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