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raketka [301]
3 years ago
11

What is the area of a triangle with the perimeter of, 15cm, 19cm, and 12cm?

Mathematics
1 answer:
ANEK [815]3 years ago
3 0

Answer:

89.9778 cm

Step-by-step explanation:

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Which of the following is the best definition of vertical angles?
Lilit [14]

Step-by-step explanation:

Very quick and effortless example of vertical angles in the attached image. When 2 straight lines intersect, the 2 angles opposite each other at that point are vertical angles, and they are always congruent.

I'd say it's the 3rd option:

"Vertical angles are a pair of non-adjacent angles formed by two intersecting lines."

but any of the first three could be technically true really. Adjacent angles are 2 angles that share a side, and vertical angles cannot share one.

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2 years ago
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3 years ago
Given right triangle QRS, what is the value of sin(30°)?
m_a_m_a [10]

The value of sin(30°) is 1/2.

<h3>What is Trigonometry?</h3>

The branch of mathematics concerned with specific functions of angles and their application to calculations.

The diagram is attached below:

We know,

sin 30= Perpendicular/ Hypotenuse.

As, the hypotenuse is the opposite side of the right angle and the perpendicular is opposite to the given angle.

So,

sin 30 = 5/10

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Learn more about trigonometry here:

brainly.com/question/1152974

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3 0
1 year ago
Read the questions and choose the best answer.
Arte-miy333 [17]
Where’s the questions ?
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