Which is the answer for Sin(2πx0,6248)

Question

In an exercise, the problem: Sin(2πx0,6248) gave me two different answers, one at the calculator (0,06846) and another on the excel, where I used =SEN(2*3,14159265359*A2) (A2 = 0,6248). For this one the answer was -0,7062.

Why did I get those two different answers? And which one is the right answer?

Answer 1

Your question is a bit unclear with no expected answer provided.

Excel's SIN function expects 'the angle in radians for which you want the sine' (see RADIANS function). If you are looking for the sine of 0.6248° then the correct formula is,

=sin(radians(0,6248))

Example:

=sin(radians(30))    ◄ returns 0.5

A full list of the available trigonometric function is available at: Math and trigonometry functions (reference).