Question

calcule o valor da expressão Sen(330°) + sen(450°) + tg(120)​

Answer 1

$\sin(330) = - \sin(360 - 330) \\ = - \sin(30) = - \boxed{\frac{1}{2}}$

$\boxed{\sin(450)=\sin(90)=1}$

$\tan(120)=-\tan(180-120)=-\tan(60=-\sqrt{3}$

$\sin(330)+\sin(450)+\tan(120)$

$-\frac{1}{2}+1-\sqrt{3}=\frac{-1+2-2\sqrt{3}}{2}$

$\boxed{\boxed{\frac{1-2\sqrt{3}}{2}}}$