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3 years ago

Find the length of BC again

Mathematics

2 answers:

iren2701 [21]3 years ago

5 0

Answer:

BC = 26.05

Step-by-step explanation:

SOH CAH TOA

tan 61 = 47/BC

BC = 47/tan 61

Burka [1]3 years ago

3 0

Since this is a right triangle, we can use one of the three main trigonometric functions: sine, cosine, or tangent.

Remember: SOH-CAH-TOA

Looking from the angle, we know the opposite side and want to know the adjacent side. Therefore, we should use the tangent function.

tan(61) = 47 / BC

BC = 47 / tan(61)

BC = 26.05 units

Hope this helps!

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Answer:

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Part 2) The perimeter is equal to $20\ units$

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Step-by-step explanation:

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see the attached figure

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substitute in the formula

$d=\sqrt{(1-4)^{2}+(-2-2)^{2}}$

$d=\sqrt{(-3)^{2}+(-4)^{2}}$

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substitute in the formula

$d=\sqrt{(-3-1)^{2}+(1+2)^{2}}$

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substitute in the formula

$d=\sqrt{(-3-0)^{2}+(1-5)^{2}}$

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