Question the-me
The measure of angle is radians. The measure of angle is radians greater than the measure of angle . What is the measure of angle , in degrees?
The measure of angle R is 2 π 3 radians. The measure of angle T is
Medium-difficulty · SAT Math · Circles — Arc length and sector area. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice C is correct. It’s given that the measure of angle is radians, and the measure of angle is radians greater than the measure of angle . Therefore, the measure of angle is equal to radians. Multiplying by to get a common denominator with yields . Therefore, is equivalent to , or . Therefore, the measure of angle is radians. The measure of angle , in degrees, can be found by multiplying its measure, in radians, by . This yields , which is equivalent to degrees. Therefore, the measure of angle is degrees.
Choice A is incorrect. This is the number of degrees that the measure of angle is greater than the measure of angle .
Choice B is incorrect. This is the measure of angle , in degrees.
Choice D is incorrect and may result from conceptual or calculation errors.
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