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3 years ago

12

What is the length of BC?

1 answer:

Alekssandra [29.7K]3 years ago

6 0

Answer:

2.1

Step-by-step explanation:

This involves trigonometry. Since we need to find the value of a, we need to find a trig equation with a as the numerator. Luckily, we have one, tan. So, tan(20) is equal to a/6, right. So, using a calculator, tan(20) is approximately equal to 0.363. This times 6 should equal a. This is approximately around 2.1. Thus our answer is 2.1

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

The Length of one side of a parallelogram is 3 more than twice the length of the adjacent side. The perimeter of the parallelogr

katovenus [111]

Answer: 4 cm and 11 cm.

Step-by-step explanation:

1. You can calculate the perimeter of a parallelogram as following:

$P=a+b+c+d$

Where a+b+c+d are the lenghts of the sides.

By definition the parallelogram has two pairs of parallel sides, therefore:

a=c and b=d

Then, you can calculate the perimeter as following:

$P=2(a+b)$

2. Let's call the adjacent side $x$ , then the other side is 2x+3.

3. Substitute values and solve for x:

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4. Then the lenghts of the sides are:

$x=4cm\\2x+3=2(4cm)+3=11cm$

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4 years ago