↩ 🔵 🔵 🔵 ❪∂❫ Trigonometry Math ○ ❪∂₁❫ Geometric Functions ○ Trigonometric Function ○꠹ ❪∂₁❫ Algebraic Functions ○ Cosine (cos₍x₎) ○◂ Sine (sin₍x₎) ○◂