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2 years ago

Can you find both the value of x and y? It is a 30-60-90 triangle

Mathematics

1 answer:

Juli2301 [7.4K]2 years ago

3 0

Answer:

x = 8*root3

y = 16

Step-by-step explanation:

You can use tangent and cosine of 60° to find x and y, BUT THERE'S A SHORTCUT. You pointed out that its a 30°-60°-90° triangle. That is a special right triangle. Here's the shortcut:

the longest side (hypotenuse) is double the shortest side. We have an 8 on the shortest side, so the hypotenuse (longest side) is 16. This ALWAYS works for 30°-60°-90° triangles!

Another shortcut:

The longer leg is the shorter leg × root3.

This ALWAYS works on 30°-60°-90° triangles.

So on your triangle, the short side is 8, that means the longer leg is 8×root3.

ta-daaaa!

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Step-by-step explanation:

20+(-25)=-5

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2 years ago

A science teacher gives a test with 15 questions. This teacher is a hard grader. The teacher assigns points in the following man

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Answer: The standard deviation was calculated incorrectly.

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2 years ago

What is the volume of a square pyramids

frozen [14]

Answer:

$\large\boxed{V=75\ in^3}$

Step-by-step explanation:

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$V=\dfrac{1}{3}BH$

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We have a base length a = 5 in and a height H = 9 in.

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3 years ago

A rectangle has a height 3z and a width of 2x-3<br><br> Express the area of the entire rectangle.

viktelen [127]

Answer:

3z(2x - 3)

Step-by-step explanation:

Area of a rectangle, a = height * width

height, h = 3z

width, w = 2x - 3

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expand

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2 years ago

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She rides the train for 1/2 of a day.

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3 years ago