Question

The vanishing point of the picture is represented by point B.

Answer 1

A) Angles ABD and CBD are supplementary, so you have ...
 ∠ABD + ∠CBD = 180°
 6.2(∠CBD) + ∠CBD = 180°
 7.2(∠CBD) = 180°
 ∠CBD = 180°/7.2
 ∠CBD = 25°

B) Angles EBD and CBD are complementary, so you have ...
 ∠FBE = ∠EBD = 90° - ∠CBD
 ∠FBE = 90° - 25°
 ∠FBE = 65°