calculate cos(60°)

⚠ Degrees → radians: multiply by $\frac{\pi }{180}$, so the expression becomes $\cos (\frac{60}{180}·\pi )$

Let's calculate: $\cos (\frac{60}{180}\times \pi )$

We simplify the fraction: $\frac{60}{180}$ by the common factor: $60$ to get the new quotient: $\frac{1}{3}$

$\cos (\frac{1}{3}\times \pi )$

ⓘ The cosine is the x-coordinate (horizontal axis) of the point reached on the unit circle after a rotation of $\frac{1}{3}\times \pi$ radians from the horizontal axis pointing to the right, this is a remarkable value: $\cos (\frac{1}{3}\times \pi )$ = $\frac{1}{2}$

▶Result:   $\frac{1}{2}$

The numeric value of: $\frac{1}{2}$ is:

▷ $0.5$