ASIN()
Syntax. ASIN(number)
Definition. Use the ASIN() function to calculate the adjacent angle based on the sine (see Figure 16-5).
Argument
number (required) The sine of the angle; must be between –1 and 1
Background. This function calculates the angle from a sine value. The result is a radian measure and has to be converted into degrees with the DEGREES() function or by multiplying the result by 180/PI().
Because each angle occurs two times in a full circle, the value range for the arcsine is restricted.
If the angle is calculated as a radian measure, the value range spans –π/2 to π/2.
If the angle is calculated in degrees, the value range spans –90° to 90°.
The values of the arcsine in a coordinate plane look like this:
Figure 16-5. The ASIN() function. ...
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