shawn2799 shawn2799
  • 02-07-2020
  • Mathematics
contestada


In the triangle, not drawn to scale, angle
BAC = 30° and AB = 40 m. The length. BC,
in metres, is​

Respuesta :

Newton9022 Newton9022
  • 08-07-2020

Question Correction

In the right triangle, not drawn to scale, angle  BAC = 30° and AB = 40 m. The length. BC,  in metres, is​

Answer:

23.09 metres

Step-by-step explanation:

The triangle is a right triangle with :

[tex]A=30^\circ \\B=90^\circ\\AB=40$ metres[/tex]

We are required to find the length of the side BC.

Using Trigonometry ratios

[tex]\tan \theta =\dfrac{BC}{AB}\\\tan 30^\circ =\dfrac{x}{40} \\BC, x =40 \times \tan 30^\circ\\BC=23.09$ metres[/tex]

The length BC,  in metres, is​ 23.09 metres.

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