Question

O valor de 4 sen30° + Cos30° - sem 60° + 2 cos60° + ✔️2(sen 45 graus) é? (Gente o “✔️” é raiz quadrada)

Answer 1

$4\cdot\sin{30^\circ}+\cos{30^\circ}-\sin{60^\circ}+2\cdot\cos{60^\circ}+\sqrt2\cdot\sin{45^\circ}=\\\\=4\cdot\frac{1}{2}+\frac{\sqrt3}{2}-\frac{\sqrt3}{2}+2\cdot\frac{1}{2}+\sqrt2\cdot\frac{\sqrt2}{2}=\\\\=2+1+1=\\\\=4$