SOLUTION: I'm solving horizontal curve where the radius is 4000m and the subtending angle is 19 degrees. I understand that the formula for CL is 2* Radius sin ( tetha/2). so is that 2*(4000m

Algebra ->  Trigonometry-basics -> SOLUTION: I'm solving horizontal curve where the radius is 4000m and the subtending angle is 19 degrees. I understand that the formula for CL is 2* Radius sin ( tetha/2). so is that 2*(4000m      Log On


   

Question 262343: I'm solving horizontal curve where the radius is 4000m and the subtending angle is 19 degrees. I understand that the formula for CL is 2* Radius sin ( tetha/2). so is that 2*(4000m)sin 19 degrees from there how do i find the arc length S.
Answer by Alan3354(69443) About Me  (Show Source):
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I'm solving horizontal curve where the radius is 4000m and the subtending angle is 19 degrees. I understand that the formula for CL is 2* Radius sin ( tetha/2). so is that 2*(4000m)sin 19 degrees from there how do i find the arc length S.
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If I understand it, you're looking for the length of the arc subtended by a 19 deg angle, with a radius of 4000 meters.
That's 2*pi*r*(19/360)
=~ 663.225 meters