参考:

sin0°= 0 sin30°= 1/2 = 0.5 sin45°= √2/2 = 0.7071067811... sin60°= √3/2 = 0.8660254037... sin90°= 1	cos0°= 1 cos30°= √3/2 = 0.8660254037... cos45°= √2/2 = 0.7071067811... cos60°= 1/2 = 0.5 cos90°= 0	tan0°=0 tan30°= √3/1 = 0.5773502691... tan45°= 1 tan60°= √3 = 1.7320508075... tan90°= なし
sin(90°-θ) = cosθ cos(90°-θ) = sinθ tan(90°-θ) = 1/tanθ	sin(180°-θ)= sinθ cos(180°-θ)= -cosθ tan(180°-θ)= -tanθ	sin^{^2}θ+cos^{^2}θ = 1 tanθ = sinθ/cosθ 1+tan^{^2}θ = 1/cos^{^2}