sin²(x) is a common notation for (sin(x))². sin²(30°) equals 1/4, which is the sine of 30°
Half angle formula determines trigonometric ratios like 15° and 22.5°. Half angle is represented by θ/2. Trigonometric functions include sine, cosine, tangent, cosecant, secant, and cotangent
Trigonometry studies triangle angles and sides relationships. Sine function relates opposite side to hypotenuse in right triangles. Sine function oscillates between -1 and 1 as angle increases
Table shows values of sines and cosines from 0° to 90° at 1' intervals. Vertical columns contain angles from 0° to 90° and 89° to 0°. Horizontal rows show angles from 0' to 60' and 60' to 0'. Mean Difference Column shows angles from 1' to 9'
Trigonometric table contains values of trigonometric ratios and functions. Includes sine, cosine, secant, tangent, cosecant, secant, and cotangent functions. Shows relationships between trigonometric functions
Sin 180 degrees has the exact value of zero. Sine is one of three fundamental trigonometric functions. Sine equals opposite side divided by hypotenuse in right triangles