2007-06-15 04:10:22 · 3 answers · asked by !!!!!DR.???? 1 in Science & Mathematics ➔ Mathematics
If you have the radius and the angle (in degrees), the length of the arc is:
(angle/360)*2*pi*r = (angle)(pi)(r)/180
If you have it in radians:
(angle/2pi)*2*pi*r = angle*r
2007-06-15 04:17:35 · answer #1 · answered by yeeeehaw 5 · 0⤊ 0⤋
A circle O has a radius OA and a line segment OB. Radius OA makes a 40 degree angle with line segment OB to form
arc BA. Radius OA is 6 meters long. Find the length of arc BA.
P.S. Did you want an exercise that is more geometry or calculus based?
2007-06-15 04:19:40 · answer #2 · answered by ≈ nohglf 7 · 0⤊ 0⤋
Are we talking about an arc as part of the circumference of a circle, or the arc length of a parameterized curve?
EDIT: I'm guessing from the other answers that we're talking about circles. In that case, the answer above me gives a great example.
2007-06-15 04:19:41 · answer #3 · answered by TFV 5 · 0⤊ 0⤋