Найдите значение выражения 8⋅cos59∘sin31∘\frac{8\cdot \cos59^{\circ} }{\sin31^{\circ} }sin31∘8⋅cos59∘▸Ответ8▸Решение8⋅cos59∘sin31∘=\frac{8\cdot \cos59^{\circ} }{\sin31^{\circ}}=sin31∘8⋅cos59∘=8⋅cos59∘sin(90−59)=\frac{8\cdot \cos59^{\circ}}{\sin(90-59)}=sin(90−59)8⋅cos59∘=8⋅cos59∘cos59∘=8\frac{8\cdot \cos59^{\circ}}{\cos59^{\circ}}=8cos59∘8⋅cos59∘=8