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IRISSAK [1]
3 years ago
11

How do you know when to find area or circumference

Mathematics
1 answer:
const2013 [10]3 years ago
5 0

Hello there,

To find the area of a circle you use an equation:

  • A = πr²

For the circumference you use:

  • C = 2πr

These two equations would help you find the area as well as the circumference of a circle.

Hope I helped,

Amna

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Given sin A = 12/13 and that angle A is in Quadrant 1,
UkoKoshka [18]

We have been given that \text{sin}(A)=\frac{12}{13} and angle A is in quadrant 1. We are asked to find the exact value of \text{cot}(A) in simplest radical form.

We know that sine relates opposite side of right triangle with hypotenuse.

\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}

This means that opposite side is 12 units and hypotenuse is 13 units.

We know that cotangent relates adjacent side of right triangle with adjacent side.

\text{cot}=\frac{\text{Adjacent}}{\text{Opposite}}

Now we will find adjacent side using Pythagoras theorem as:

\text{Adjacent}^2=\text{Hypotenuse}^2-\text{Oppoiste}^2

\text{Adjacent}^2=13^2-12^2

\text{Adjacent}^2=169-144

\text{Adjacent}^2=25

Let us take positive square root on both sides:

\sqrt{\text{Adjacent}^2}=\sqrt{25}  

\text{Adjacent}=5

Therefore, adjacent side of angle A is 5 units.

\text{cot}(A)=\frac{5}{12}

Therefore, the exact value of cot A is \frac{5}{12}.

5 0
2 years ago
Hi i would like sum help :)) please help for a brainlist !!!!!!!!!!!!!
Sergio [31]
A. all real numbers for both

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5 0
3 years ago
Which line has an equation of Y= -5x+4 in slope-intercept form?
Delvig [45]

Answer:

The line passing through the points (2, -14) and (4, -24)

Step-by-step explanation:

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3 years ago
Determine the value of x.
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It is B 4.4
Because of 2.2 is the first one and the second one should be 4.4 so it B. 4.4
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2 years ago
Simplify 7(exponent 6) multiplied by 7 (exponent 5)
Lady_Fox [76]
7(6) x 7(5) = 7(6+5) = 7(11) is the simplified answer.
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3 years ago
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