Question

Evaluate expression
arcos(cos44.2degrees)

Answer 1

Arccos means inverse cosine. If you find the cos 44.2, you get .7169106077. Then if you take the inverse cos of it, you're back to 44.2 degrees

Answer 2

arcos (cos) is cancel out, so that you just have 44.2 degree

Answer 3

Yah 44.2 degrees :)

The only time this would not be the case is when the given angle is not between 0 and 180 degrees. Then we would get a different result than what we started with ( since the arccos function only gives us values between 0 and 180 degrees ).