I am trying to calculate the area of a circle segment using MS-Excel. The radius value is stored in variable "rr", the angle is stored in variable "a".
There are 2 equivalent formulas, depending on whether the angle is in digress or radians, that should yield the same results, but in my case, I am getting different results.
Formula 1 gives:$57.345$ - I think this is the correct one...
Formula 2 gives:$303.025$
Where are my mistake in Formula $2$? Thank you.
SIN function expects an argument in radians, so even in formula 2 it should still be
SIN(RADIANS(a)).