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Transcendental Functions ======================== These mathematical functions are available if floating point is supported. They allow integers as well as floating point numbers as arguments. - Function: sin ARG - Function: cos ARG - Function: tan ARG These are the ordinary trigonometric functions, with argument measured in radians. - Function: asin ARG The value of `(asin ARG)' is a number between - pi / 2 and pi / 2 (inclusive) whose sine is ARG; if, however, ARG is out of range (outside [-1, 1]), then the result is a NaN. - Function: acos ARG The value of `(acos ARG)' is a number between 0 and pi (inclusive) whose cosine is ARG; if, however, ARG is out of range (outside [-1, 1]), then the result is a NaN. - Function: atan ARG The value of `(atan ARG)' is a number between - pi / 2 and pi / 2 (exclusive) whose tangent is ARG. - Function: exp ARG This is the exponential function; it returns e to the power ARG. - Function: log ARG &optional BASE This function returns the logarithm of ARG, with base BASE. If you don't specify BASE, the base E is used. If ARG is negative, the result is a NaN. - Function: log10 ARG This function returns the logarithm of ARG, with base 10. If ARG is negative, the result is a NaN. - Function: expt X Y This function returns X raised to power Y. - Function: sqrt ARG This returns the square root of ARG.