Question

respondam por favor
eu respondi mas tah errado

Answer 1

41) Pela Lei dos Senos:

$\dfrac{45}{\text{sen}~35^{\circ}}=\dfrac{x}{\text{sen}~120^{\circ}}$

$\dfrac{45}{0,57}=\dfrac{x}{0,86}$

$0,57x=45\cdot0,86$

$x=\dfrac{45\cdot0,86}{0,57}$

$x\approx67,89~\text{m}$.

Letra D

42) Lembre-se que, $\pi~\text{rad}=180^{\circ}$, ou seja, $1^{\circ}=\dfrac{\pi}{180}~\text{rad}$

Então,

$235^{\circ}=235\cdot\dfrac{\pi}{180}~\text{rad}=\dfrac{235\pi}{180}~\text{rad}=\dfrac{47\pi}{36}~\text{rad}$.