Question

Na figura abaixo, a medida x corresponde a???

Answer 1

$cos60=\dfrac{15}{z}$
$z=\dfrac{15}{cos60}$
$z=30$

$cos30=\dfrac{z}{y}$
$cos30=\dfrac{30}{y}$
$y=\dfrac{30}{cos30}$
$y=34,64$

$sen45=\dfrac{x}{y}$
$sen45=\dfrac{x}{34,64}$
$x=sen45\cdot34,64$
$x=24,49$

Assim, a medida de $x$ corresponde aproximadamente a  24,49.