Respuesta :
The acute angle between the path and the rivers edge is; 30°.
We are told;
- Direct distance from river = 200 yards
Now, you walk 400 yards to the rivers edge. This means that you walk at an angle from your current point to the rivers edge.
- If the angle at your end point at the rivers edge is θ, then we can use trigonometric ratios to calculate the acute angle since the paths would form a triangle with the rivers edge.
Thus;
Sin θ = 200/400
sin θ = 0.5
θ = sin¯¹0.5
θ = 30°
The acute angle between the path and the rivers edge is 30°.
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