Solve the right triangle shown in the figure. C. BC= 3.2m, B = 43.29, ZC = 90° a. ZA = 46.80, AC = 1.9m, AB = 3.7m b. ZA = 46.89, AC = 5.3m, AB = 4.4m - LA = 46.8°, AC = 5.3m, AB = 6.2m ZA = 46.8°, AC = 3.0m, AB = 4.4m d. -

Solve the right triangle shown in the figure C BC 32m B 4329 ZC 90 a ZA 4680 AC 19m AB 37m b ZA 4689 AC 53m AB 44m LA 468 AC 53m AB 62m ZA 468 AC 30m AB 44m d class=

Respuesta :

The given triangle can be shown below

Since the sum of angles in a triangle is 180 degrees it follows

[tex]\angle A+\angle B+\angle C=180^{\degree}[/tex]

It follows

[tex]\begin{gathered} \angle A+43.2+90=180^{\degree} \\ \angle A=180-90-43.2 \\ \angle A=46.8^{\degree} \end{gathered}[/tex]

From the triangle above

Using trigonometrical ratios

It follows

[tex]\tan 43.2=\frac{b}{3.2}[/tex]

This gives

[tex]\begin{gathered} b=3.2\times\tan 43.2 \\ b=3.2\times0.9391 \\ b=3.0 \end{gathered}[/tex]

Hence,

[tex]b=3.0m[/tex]

Also

[tex]\cos 43.2=\frac{3.2}{c}[/tex]

It follows

[tex]\begin{gathered} c\times\cos 43.2=3.2 \\ c=\frac{3.2}{\cos 43.2} \\ c=\frac{3.2}{0.7290} \\ c=4.4 \end{gathered}[/tex]

Hence,

[tex]c=4.4m[/tex]

Therefore, the solutions are

[tex]\angle A=46.8,\bar{AC}=3.0m,\bar{AB}=4.0m[/tex]

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