Here's the question you clicked on:
Sariah
Convert the angle in radians to degrees. \LARGE \frac{12\pi}{9}
use the identity pi radians = 180 degrees
a. 240 b. 239 c. 242 d. 241
One of this answer is right. a. 240 b. 239 c. 242 d. 241
pi rad = 180 degrees 1 .......= 180/pi 12pi/9 rads = 12 * pi * 180 degrees ----------- 9 * pi
can you pick it up from here?
But the teacher said that i have to choose one answer from the nex answers: a. 240 b. 239 c. 242 d. 241
yup - but you can work it out from the formula i gave you - that is 12 * pi * 180 degrees ----------- 9 * pi can you work this out?
the pi's cancel out to give 12* 180 ------- 9 9 divides into 180 20 times so this gives 12* 20 = 240 the answer is a. 240