Trigonometry
Determine the angle measure θ\thetaθ without using a calculator. Express the answer in degrees.
θ=arctan(33)\theta=\arctan\left(\frac{\sqrt3}{3}\right)θ=arctan(33)
60∘60^{\circ}60∘
30∘30^{\circ}30∘
−30∘-30^{\circ}−30∘
−45∘-45^{\circ}−45∘