ACOS(number)

Returns the arc cosine in radians between -π/2 to π/2 of the number given, which must lie between -1 and 1.

ASIN(number)

Returns the arc sine in radians between -π/2 to π/2 of the number given, which must lie between -1 and 1.

ATAN(number)

Returns the arc tangent in radians between -π/2 to π/2 of the number given, which must lie between -1 and 1.

ATAN2(y,x)

Returns the arc tangent in radians between -?π to π of y/x. The result will be in the correct quadrant.

COS(angle_radians)

Returns the cosine of the angle given in radians.

SIN(angle_radians)

Returns the sine of the angle given in radians.

TAN(angle_radians)

Returns the tangent of the angle given in radians.