iteratiestappen
iteratiestappen iteratiestappen
  • 20-02-2019
  • Mathematics
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Please help me with this trigonometry question:

Please help me with this trigonometry question class=

Respuesta :

Ashraf82
Ashraf82 Ashraf82
  • 20-02-2019

Answer:

The distance from A to B is 736.2 to the nearest tenth foot

Step-by-step explanation:

In ΔCAB

∵ m∠CAD = 30° ⇒ exterior angle of Δ at vertex A

∴ m∠CAD = m∠ACB + m∠ABC

∵ m∠ABC = 20°

∴ m∠ACB = 30° - 20° = 10°

We will use the sin rule to find the distance AB

∵ [tex]\frac{sin20}{1450}=\frac{sin10}{AB}[/tex]

∴ [tex]AB=\frac{1450(sin10)}{sin20}=736.1842936[/tex] ≅ 736.2 to the nearest tenth foot

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