In the circle shown below, ∠BAC is a central angle, and r is the length of AB.

https://lh3.googleusercontent.com/PWIO0Ql61c4y4mSwuTcNH2XLe5frUkGQK0AfTNkh2llwiBYaqh0JUbMgBphrk2P4XmTF9Dzvu1Qy4bCumKdm6UD3fmvm1Wb1y5YqxhfAwJc0cJxMZlouybFhT9AC9VbhdwJnIF6j

The area of the shaded sector is equal to 12r2θ. Which of the following must be true about the value of θ?

θ= the measure of ∠BAC in degrees.

θ= the measure of ∠BAC in radians

θ= the difference between 2π and the measure of ∠BAC in radians

θ= the difference between 360 and the measure of ∠BAC in degrees

xeroxlion Feb 24, 2019