Use to give the sine of an angle.
In a right angled triangle, the sine of an angle is the length of the opposite side (O) divided by the length of the hypotenuse (H).
sinx = O/H
So for an example we could transpose the formula to find either O or H if we know the angle x.
O = H * sinx or H = O/sinx
In the software we would enter the following for the values where O is 26 and H is 30 and x is 60 degrees
=(SIN(60))*30 and =26/(SIN(60))