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2 years ago

What is the hight of a Building 1 Angle 71o Distance 20 meters

1 answer:

6 0

The height of a building is 58.08 meters if the angle is 71 degree and the distance between A and B is 20 meters.

<h3>What is trigonometry?</h3>

Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.

We have:

Angle = 71 degree

Distance between A and B = 20 meters

Let's suppose the height of the building is x meters.

From the right angle triangle applying the tan ratio:

tan71 = x/20

x = 58.08 meter

Thus, the height of a building is 58.08 meters if the angle is 71 degree and the distance between A and B is 20 meters.

Learn more about trigonometry here:

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Trevon is making payments on a computer that costs $1548. If he makes 12 equal payments, how much is three of his payments?

sammy [17]

Answer:

The answer is 387. Let's see why.

Step-by-step explanation:

The computer costs $1548. And all the 12 payments are <u>equal.</u>

To find one payment we need to divide the total cost to the number of payments.

$\frac{1548}{12} = 129$

Each one of the payments is $129.

To find three payment we simply follow:

129 . 3 = <u>387</u>

Another solution can be;

Since we are looking for 3 of the payments we can divide it to the total payment

$\frac{3}{12}$ which equals to $\frac{1}{4}$

And we can find the answer by multiplying it with the cost which gives;

$\frac{1}{4} . 1548 =387$

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3 years ago

Alex invests $2,000 in a company's stock. After a year, the value of Alex's stock has increased to $2,500. What rate of return h

Kay [80]

The rate of interest is 25%

<u>Explanation:</u>

Given:

Principal, P = $2,000

Amount, A = $2500

Time, t = 1 year

Rate of Interest, r = ?

We know:

$Amount = P(1+\frac{r}{100})^t$

On substituting the value we get:

$2500 = 2000 (1 + \frac{r}{100})^1\\ \\\frac{25}{20}= (1+\frac{r}{100})\\$

$\frac{5}{20} = \frac{r}{100}\\ \\r = \frac{100 X 5}{20} \\\\r = 25$

Therefore, the rate of interest is 25%

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