Calculates the arc (or inverse) cosine of a value. The arc cosine is an angle between 0 and 180 degrees whose cosine is x. @ACOS returns a value between 0 and π radians.
Calculates the arc (or inverse) sine of a value. The arc sine is an angle between -90 and 90 degrees whose sine is x. @ASIN returns a value between π/2 and -π/2.
Calculates the arc (or inverse) tangent of a value. The arc tangent is an angle between -90 and 90 degrees whose tangent is x. @ATAN returns a value between π/2 and -π/2.
Calculates the four-quadrant arc tangent of y/x. The four-quadrant arc tangent is the angle, measured in radians, whose tangent is y/x.
Calculates the cosine of angle x measured in radians. The formula 1/@COS(x) finds the secant, or reciprocal of @COS.
Returns the value π, the ratio of the circumference of a circle to its diameter.
Calculates the sine of angle x measured in radians. The formula 1/@SIN(x) finds the cosecant, or reciprocal of @SIN.
Calculates the tangent of angle x measured in radians. The formula 1/@TAN(x) finds the cotangent, or reciprocal of @TAN.