PSAT Math Multiple-Choice Question 695: Answer and Explanation
Question: 695
What would be the measure, in radians, of an arc on a circle if the measure of the arc in degrees was 270?
- A.
- B.
- C. 270π
- D.
Correct Answer: B
Explanation:
(B) To convert degrees to radians, simply multiply the number of degrees by
Choice (B) is the answer.
Alternatively, you could have realized that 270 degrees is of a circle. A circle is 2π radians, so 270 degrees corresponds to:
Note: Radians may or may not be a topic tested on the PSAT. It is definitely something that could be on the SAT. So this problem was included here to prepare you.
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