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Check all that apply. Pie over 6 is the reference angle for:

Check all that apply. Pie over 6 is the reference angle for:-example-1
User Shahjahan Jewel
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2 Answers

27 votes
27 votes
same anwser as person above^^^
User Hcaelxxam
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6 votes
6 votes

π/6 is in quadrant I.

The reference angle of an angle in quadrat I is the same angle (If you add or subtract 2π to the angle n times you get the same angle).

Then, the reference angle or π/6 are:


\begin{gathered} (\pi)/(6) \\ \\ (\pi)/(6)+2\pi=(\pi+12\pi)/(6)=(13\pi)/(6) \\ \\ (\pi)/(6)+2(2\pi)=(\pi)/(6)+4\pi=(\pi+24\pi)/(6)=(25\pi)/(6) \\ \\ (\pi)/(6)-2\pi=(\pi-12\pi)/(6)=-(11\pi)/(6) \end{gathered}For the given options just 13π/6 is a reference angle for π/6Answer: D

User Chrisgooley
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