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algol [13]
3 years ago
14

Which set of values could be the side lengths of a 30-60-90 triangle? A. {4, 4 square root of 3, 8} B. {4, 4 square root of 2, 8

square root of 2} C. {4, 4 square root of 2, 8} D. {4, 4 square root of 3, 8 square root of 3}
Mathematics
2 answers:
astraxan [27]3 years ago
7 0
Your answer is A.

When you have a 30-60-90 triangle, your sides will always have a set pattern. 

The side across from the 30 angle will be equal to <em>n</em> (in this case <em>n</em> = 4).

The side across from the 60 angle will always be equal to <em>n</em>√(3) (in this case, 4√(3)).

The side across from the 90 angle will always be 2<em>n</em> (in this case, 8).

You could go into trig or pythagorean theorem to prove this, but it's much simpler to remember it because it's a special triangle. 

So, you're answer is A.
Marysya12 [62]3 years ago
5 0

Answer:

Your answer is going to be letter A

Step-by-step explanation:

Apex

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3 years ago
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SCORPION-xisa [38]

Answer:

r = 5 inches

Step-by-step explanation:

Area of circle, A=78.5\ in^2

It is required to find the radius of the circle. The area of a circle is given by the formula :

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r=\sqrt{\dfrac{A}{\pi}} \\\\r=\sqrt{\dfrac{78.5}{3.14}} \\\\r=5\ \text{inch}

So, the radius of the circle is 5 inches.

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2 years ago
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max2010maxim [7]
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3 years ago
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hoa [83]

Step-by-step explanation:

the inner top vertex angle seems to be 90°, so x = 90° too. all angles around a single point in one side of a line are in total 180°.

also, remember, all angles inside a triangle always sum up to 180°.

so, the third inner angle of the triangle is

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8 0
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Lera25 [3.4K]

Answer:

C) 0 <\ x OR x />7

Step-by-step explanation:

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