Mega Code Archive

Arcsin - the arc sine of a number, returned in radians math unit

function ArcSin ( const Number : Extended ) : Extended; Description The ArcSin function is a mathematical function giving the value in radians of the Arc Sine of Number. PI radians = 180 degrees Notes The System unit supports only the following angular functions: ArcTan Sin Cos Related commands ArcCos The Arc Cosine of a number, returned in radians ArcTan The Arc Tangent of a number, returned in radians Cos The Cosine of a number Sin The Sine of a number Tan The Tangent of a number Example code : The ArcSin of 0.5 gives 30 degrees var float : single; begin // The ArcSin of 0.5 should give 30 degrees float := ArcSin(0.5); float := RadToDeg(float); // Convert result to degrees ShowMessage('ArcSin of 0.5 = '+FloatToStr(float)+' degrees'); end; Show full unit code ArcSin of 0.5 = 30 degrees