Trigonometry

Trigonometry of right triangles

Keywords: Trigonometry of right triangles

Trigonometry of right triangles

s i n α = a c ,     c o s α = b c ,     t g α = b a
α 30° 45° 60° 90° 120° 135° 150° 180° 210° 225° 240° 270° 300° 315° 330° 360°
α 0 π 6 π 4 π 3 π 2 2 π 3 3 π 4 5 π 6 π 7 π 6 5 π 4 4 π 3 3 π 2 5 π 3 7 π 4 11 π 6 2 π
s i n α 0 1 2 2 2 3 2 1 3 2 2 2 1 2 0 1 2 2 2 3 2 1 3 2 2 2 1 2 0
c o s α 1 3 2 2 2 1 2 0 1 2 2 2 3 2 1 3 2 2 2 1 2 0 1 2 2 2 3 2 1
t g α 0 3 3 1 3 3 1 3 3 0 3 3 1 3 3 1 3 3 0
c t g α 3 1 3 3 0 3 3 1 3 3 1 3 3 0 3 3 1 3