CalcSin

CalcSin

CalcSin[ x ] calculates the sine of a number as a decimal number.

Usages

CalcSin[ x ]

CalcSin[ x ] calculates the sine of x radians as a decimal number. x must be a decimal number such as 0.5; whole numbers and exact values such as Pi are not calculated (see the warning below).

Example in out
A decimal number of radians. CalcSin[ 0.5 ] 0.479425538604
Each element of a list. CalcSin[ {0.5, 1.5} ] {0.479425538604, 0.997494986604}

CalcSin[ x, Variant=>'deg' ] or CalcSin[ Quantity[x, 'deg'] ]

With the option Variant=>'deg', or with an angle in degrees, x is in degrees. Whole numbers are calculated too.

Example in out
An angle in degrees. CalcSin[ 30, Variant=>'deg' ] 0.5
A quantity in degrees. CalcSin[ Quantity[30, 'deg'] ] 0.5
Options

Variant

'deg' for an angle in degrees. Default: radians.

Syntax Example out
CalcSin[ x, Variant=>'deg' ] CalcSin[ 30, Variant=>'deg' ] 0.5
Details
  • Rounding errors are removed: CalcSin[ Quantity[180, 'deg'] ] is displayed as 00.
  • Variables: CalcSin[ x ] with a variable x is left unevaluated.
Warning

In radians, CalcSin only calculates decimal numbers with a fractional part. CalcSin[ 1 ], CalcSin[ 1.0 ] (which counts as the whole number 1) and CalcSin[ Pi ] are left unevaluated. Use Numerical to calculate them: Numerical[ CalcSin[1] ]. For exact values, such as the sine of Pi, use the function itself with Simplify.

See also: Numerical, Math functions, Quantity