This table shows the values of the trigonometric functions sine, cosine, tangent, cosecant, secant, and cotangent for the common angles of 0°, 30°, 45°, 60°, 90°, 180°, and 270°. Sine, cosine, and tangent are defined for all angles listed, while cosecant, secant, and cotangent are undefined at some angles marked with an asterisk.