Question

I wont be receiving credit for these problems but i was just wondering how would i answer them...

A) The area of a sector of a circle with a central angle of 25π rad is 21 mm².

B) The angle between 0 and 2π in radians that is coterminal with the angle 487π in radians is...

C) Find the distance that the earth travels in one day in its path around the sun. Assume that a year has 365 days and that the path of the earth around the sun is a circle of radius 93 million miles.

Answer 1

For B... i meant to say 48/7 pi not 487pi

Answer 2

A)
a = 1/2 r^2θ, so
21 = 1/2 r^2 25π
I gotta wonder about an angle of 25π, since 2π is a complete circle...

B)
487π = 243(2π) + π

C)
1/365 * 2πr