The length of an arc subtended by a central angle is proportional to the circle's circumference. If the given central angle has measure $\theta$ and the circle has radius $r$ , then the arc has length $\ell$ such that

$\dfrac{\ell}\theta=\dfrac{2\pi r}{2\pi}=r$

where $\theta$ is given in radians. Then

$\ell=r\theta$

If $\theta$ is given in degrees, then

$\dfrac{\ell}\theta=\dfrac{2\pi r}{360}\implies\ell=\dfrac{\theta\pi r}{180}$

8 0

3 years ago

What is the value of x km trying to help a friend

mariarad [96]

Answer:

3x +45°=180° (due to straight angle)

or, 3x= 180°-45°

or,3x= 135°

or,X=135°/3

X =45°.ans

3 0

2 years ago

Consider the line (d) with equation y = –2x+6

PolarNik [594]

Answer:

i dont know sry need points sry

Step-by-step explanation:

3 0

3 years ago

8 miles is approximately 6 kilometers. How many kilometers is equal to 40 miles?

Naddik [55]

Answer:

30 kilometers

Step-by-step explanation:

3 0

3 years ago

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