You mean, you have the cosine, and want the angle? That is called arc-cosine, often written as cos-1x. Your scientific calculator should have a "shift" key or something similar, which you press, followed by the cosine key. That will give you the inverse cosine or arc-cosine.
Looking at a unit circle, cosine is the horizontal coordinate. Pi radians is halfway around the circle (180°), so the coordinate is (-1,0). Cosine(pi) = -1
udefined
The cosine of 2pi is 1. In fact, for every integer N, the cosine of 2 N pi is 1.
The sine curve is exactly the same as the cosine curve shifted pi/2 radians to the left
You mean, you have the cosine, and want the angle? That is called arc-cosine, often written as cos-1x. Your scientific calculator should have a "shift" key or something similar, which you press, followed by the cosine key. That will give you the inverse cosine or arc-cosine.
Looking at a unit circle, cosine is the horizontal coordinate. Pi radians is halfway around the circle (180°), so the coordinate is (-1,0). Cosine(pi) = -1
0.99847149863
udefined
The cosine of 2pi is 1. In fact, for every integer N, the cosine of 2 N pi is 1.
Arc length = 136*2*pi*r/360So r = 360*arc length/(136*2*pi) = 425.5 cmArc length = 136*2*pi*r/360So r = 360*arc length/(136*2*pi) = 425.5 cmArc length = 136*2*pi*r/360So r = 360*arc length/(136*2*pi) = 425.5 cmArc length = 136*2*pi*r/360So r = 360*arc length/(136*2*pi) = 425.5 cm
The sine curve is exactly the same as the cosine curve shifted pi/2 radians to the left
angle of arc/ angle of circle (360°) = length of the arc/ total circumference (2 pi* radius) so you just have to find r then so: angle of arc/ angle of circle (360°) *2pi = length of the arc/ radius radius= ength of the arc/ angle of arc/ angle of circle (360°) *2pi not that hard ;)
2*pi*r/Arc length = 360/Degreesince both are a ratio of the whole circle to the arc.Simplifying,r = 360*Arc Length/(2*pi*Degree) = 180*Arc Length/(pi*Degree)
Yes, except at odd multiples of pi/2 radians, where the cosine is zero so that the division is not defined.
It is (5*pi/6)*8 = 20*pi/3 m.
at a 45 degree angle, or pi/4