contestada

A central angle in a circle with a radius of 3 cm intercepts an arc with a length of 6 cm what is the measure of the central angle

Respuesta :

Answer:

[tex]114.59\°[/tex]

Step-by-step explanation:

we know that

The circumference of a circle is equal to

[tex]C=2\pi r[/tex]

In this problem we have

[tex]r=3\ cm[/tex]

substitute

[tex]C=2\pi (3)=6 \pi\ cm[/tex]

Remember that

[tex]360\°[/tex] subtends the arc length of the complete circle

so

by proportion

Find the measure of the central angle for an arc length of [tex]6\ cm[/tex]

[tex]\frac{360}{6\pi } \frac{degrees}{cm} =\frac{x}{6} \frac{degrees}{cm} \\ \\x=6*360/(6\pi )\\\\ x=114.59\°[/tex]