Question

determine os valores de x,y,w e z em cada caso:​

Answer 1

Resposta:

1.

a) cos 30 = $\frac{16}{x}$

$\frac{\sqrt{3} }{2}$ = $\frac{16}{x}$

$32 = \sqrt{3} x\\x= \frac{32}{\sqrt{3} } . \frac{\sqrt[n]{3} }{\sqrt[n]{3} } = \frac{32\sqrt[n]{3} }{3}$

b) $sen y = \frac{13}{26}\\sen y = 0,5 ou \frac{1}{2}$

c)

$sen 60 = \frac{w}{18} \\\frac{\sqrt[n]{2} }{2} = \frac{w}{18} \\18\sqrt[n]{2} = 2w\\\frac{18\sqrt[n]{2} }{2} = w\\9\sqrt[n]{2} = w$

d)

$\frac{\sqrt[n]{2} }{2} =\frac{20}{x} \\x\sqrt[n]{2} = 40\\x = \frac{40}{\sqrt[n]{2} } . \frac{\sqrt[n]{2} }{\sqrt[n]{2} } = \frac{40\sqrt[n]{2} }{2} = 20\sqrt[n]{2}$