Calculating sine and cosine of an angle
But what to do when you know only degrees? Excel has also RADIANS function built-in =RADIANS(degrees) which convert degrees to radians. Just use it. Formula for sine with degrees is =SIN(RADIANS(degrees))
The same for cose. Formula for cose with radians is =COS(radians)
When you know only degrees just use this formula =COS(RADIANS(degrees))
That’s the clever Excel trick how to convert degrees to radians and calculate sine and cosine for an angle. Trig functions are much easier thanks to Excel.