Alibre Design

Chapter 4 - Sketchingsin(x) sine Returns the sine of an angle. The argument can be anyvalid numeric expression in radians. The sin() functiontakes an angle and returns the ratio of two sides of aright triangle. The ratio is the length of the sideopposite the angle divided by the length of thehypotenuse. To convert degrees to radians, multiplydegrees by pi/180. To convert radians to degrees,multiply radians by 180/pi.sin(a) = b/csqrt(x) square root Returns the square root of the argument:x > 0tan(x) tangent The argument can be any valid numeric expressionthat expresses an angle in radians.X^n X n x > 0tan(a)=b/aIn the table above, “x” is a real number; “n” is an integer; and “a,” “b,” “c” and“a” have the following relationship:Dimensionality of equationsEach parameter has a specified dimensionality (that is, length, angle, scalar, count).When you write an equation for a parameter, the equation's dimensionality must matchthat of the parameter. If the equation's dimensionality is different, the equation will bedisplayed in red and a popup error message will appear when you rollover the equation.For example, if D1 and D2 are the lengths of two line figures, you can write theequation, D2 = D1 * 0.50, which has the correct dimensionality (length), but youcannot write D2 = D1 * D1, because this equation has dimensionality “length squared”.104