Question

me ajudem por favor ​

Answer 1

Cosseno θ = $\frac{Ca}{H}$

Cosseno = $\frac{3}{2\sqrt{6} }$

Cosseno = $\frac{3 . 2\sqrt{6} }{2\sqrt{6} . 2\sqrt{6} }$

Cosseno = $\frac{6\sqrt{6} }{4\sqrt{36} }$

Cosseno = $\frac{6\sqrt{6} }{4.6}$

Cosseno = $\frac{6\sqrt{6} }{24}$

Cosseno = $\frac{ \sqrt{6} }{4}$

Cosseno a -1 de $\frac{\sqrt{6} }{4}$

θ ≈ 58,04

Calcula o x :

Cosseno θ = $\frac{Ca}{H}$

Cosseno 58,04 = $\frac{2\sqrt{6} }{H}$

0,6124 = $\frac{2\sqrt{6} }{H}$

H = $\frac{2\sqrt{6} }{0,6124}$

H = 7,99

H ≈ 8

X = H

X ≈ 8