Practice problem
Find an angle θ\thetaθ with 0<θ<360∘0<\theta<360^{\circ}0<θ<360∘ or 0<θ<2π0<\theta<2\pi0<θ<2π that has the same cosine value as 80∘80^{\circ}80∘
0.985
-0.985
0.174
-0.174
Type a concept, like “slope” or “photosynthesis”.