Question

Cât este cos de 45°/2 ?​

Answer 1

$\cos(45) de \: grade = \frac{ \sqrt{2} }{2} .$

$\frac{ \cos(45) }{2} = \frac{ \frac{ \sqrt{2} }{2} }{2} = \frac{ \frac{ \frac{ \sqrt{2} }{2} }{2} }{1} = \frac{ \sqrt{2} \times 1}{2 \times 2} = \frac{ \sqrt{2} }{4} .$