Practice problem
Which of the following are complementary angles? Mark all that apply.
40∘40^{\circ}40∘, 50∘50^{\circ}50∘
45∘45^{\circ}45∘, 55∘55^{\circ}55∘
π6\frac{\pi}{6}6π, π3\frac{\pi}{3}3π
π4\frac{\pi}{4}4π, π4\frac{\pi}{4}4π
Type a concept, like “slope” or “photosynthesis”.