### Home > A2C > Chapter 11 > Lesson 11.2.3 > Problem11-76

11-76.

Use reference angles, the symmetry of a circle, and the knowledge that tan(20°) ≈ 0.3640 to write three other true statements using tangent.

$180° − θ$ reflects $θ$ across the y-axis, so tan $160° = −0.3640$

360° − θ reflects θ across the x-axis.

θ + 360° reflects θ across both axes.