6.2b Six Trigonometric Functions of Any Angle (Special Angles) January 21, 2022July 30, 2021 by 6.2b Six Trigonometric Functions of Any Angle (B) Special Angles (1) Value of Special Angle 30° and 60° (a)sin 30 o = 1 2 (b)cos 30 o = 3 2 (c)tan 30 o = 1 3 (d)sin 60 o = 3 2 (e)cos 60 o = 1 2 (f)tan 60 o = 3 (2) Value of Special Angle 45° (a)sin 45 o = 1 2 (b)cos 45 o = 1 2 (c)tan 45 o =1 (3) Value of Special Angle 0°, 90°, 180°, 270°, 360° (a) y = sin x x 0o 90o 180o 270o 360o sin 0 1 0 -1 0 (b) y = cos x (c) y = tan x x 0o 90o 180o 270o 360o tan 0 ∞ 0 ∞ 0