Question

Cos80sin80/2sin80 помогите решить

Answer 1

$\frac{\cos{80^{\circ}}*\sin{80^{\circ}}}{2\sin{80^{\circ}}}=\frac{\cos{80^{\circ}}}{\sin{80^{\circ}}}=\cot{80^{\circ}}=\tan{10^{\circ}}=0,1763269807$