in a circle of radius 26, find the length of the arc spanned by a central angle of pi/4 radians. round your answer to 2 decimal places. use 3.1416 as an approx for pi.
trig - Steve, Thursday, October 6, 2011 at 12:31am
Recall that C = rθ
Remember that for a whole circle, θ=2π, so C = 2πr
Here, we have r = 26, θ=π/4
c = 26 * π/4 = 13/2 * π = 20.42