4. A,B and C are points on a horizontal plane.

A is 75 m from C on a bearing of 210 degrees and the bearing of B from C is 120 degrees. The bearing of B from A is 075 degrees.
From A the angle of elevation of the top T of a vertical towel at C is 42 degrees.
Find
a. the distance BC
b.The height of the tower
c. the angle of elevation

If possible could you please draw the diagram- a sketch is fine.

And provide the working out please.

Thanks