Sine Calculator x: radianºdegreeππ/3 = Sine (x): Sine is a trigonometric function of an angle. sin(θ) = Opposite / Hypotenuse. y=Sine(x) Graph X(deg) X(Rad) Y=sine(X) 180 ̊ π 0 150 ̊ 5π/6 0.5 135 ̊ 3π/4 0.707107 120 ̊ 2π/3 0.866025 90 ̊ π/2 1 60 ̊ π/3 0.866025 45 ̊ π/4 0.707107 30 ̊ π/6 0.5 0 ̊ 0 0