Question

In circle A, the radius is 7 and the length of arc CT is 21. Determine the m 13 years ago

Answer 1

@Meinme

Answer 2

angle = arc/ radius

Answer 3

angle is 3 radians

Answer 4

86 degrees ???

Answer 5

no somthing like 171.97

Answer 6

oh 172 is an option and so is 86. can you show me how you got that?

Answer 7

to convert to degree we have to multiply 3 by 180/pi

Answer 8

it will give you somthing near about the answer 171.9 or rounded off to 172

Answer 9

why 180?

Answer 10

because pi radian is 180 degree

Answer 11

pi radian is angle at centre of semi circle.............................you will understand if you visualise

Answer 12

so half a circle in degrees

Answer 13

yep

Answer 14

ok I have another question that ill post. I have an answer but I really want to make sure its right