Question

Cos80sin80/2sin80 помогите решить

Answer 1

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