Respuesta :
The required angle m BAC = 45°.
In triangle ABC.
AC represents the foreman’s line of sight to the top of the landfill.
Landfill height is =BC
What is triangle?
The triangle is geometric shape which includes 3 sides and sum of interior angle should not grater than 180°
According to conditions angle b = 90°
The sum of angles of a triangle= 180°
That is a + b + c = 180
Therefore, c = a
a = (180 - b)/2
= (180 - 90) / 2
= 90 / 2
= 45 degrees.
Thus, the required angle m BAC = 45°
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