Desmos Graphing Calculator

CalcReferenceCopy

Math·Geometry and Trigonometry·Right triangles and trigonometry

medium

For angle $A$, the value of $\tan A=\sqrt{3}/3$. Which of the following could be the measure of angle $A$, in radians? I. $25\pi /6$ II. $53\pi /6$ III. $77\pi /6$

A

I and II only

B

I, II, and III

C

I and III only

D

I only