Answer:
Arc length = 8π
Step-by-step explanation:
As we know that -
θ = arc length / radius (r) ...............(i)
As given in the question -
<u>θ = 90°, arc length = 2π,</u>
Put values in equation (i)-
90° = 2 π / r
r = 2 π / 90°
r = 2 × 180°/ 90°
r = 4
Now Circumference of circle = 2 π r
<em>= 2π × 4</em>
<em> </em><em> = 8π</em>
Hence arc length of circle is 8π.
10km+10km*2 = 30km
30km*(1000m/1km) = 30000m
In the second equation of the problem, the kilometers from the initial total distance biked is cancelled out by the conversion of kilometers to meters, as seen in the 1000m/1km (or 1000 meters for every 1 kilometer).
Answer:
sin x = 0 at x = 0°, 180°, and 360°
Step-by-step explanation: