Hi, I'll be glad if anyone could help me with this one:

(A special trigonometry question)

A bus and a cab leave from point a

The cab towards point c, the bus towards b.

they both get there at the same time.

I should mention the points a,b,c create a simple non-even triangle.

After that, they both turn and drive across the line BC and meet at point D.

The cab driver the continues to point B, and then back to A

The bus driver "Cuts" the triangle and goes stright back to A from point D.

The cab driver arrives at point A 43.75 minutes after the bus.

The bus's speed is 56.25% of the cab's.

you need to use trig in order to find the Angle BAC

Be very greatful if anyone helps me out! :-)