Question

What is the angle between F and d in each case?

Answer 1

See below.

Explanation:

I will assume the angle between vertical and I (or F) is `45^@`. With that assumption, the angles are

`135^@" "45^@`

`45^@" "135^@`

I hope this helps,
Steve

p.s. The car is a '55 Chevrolet BelAire. I drove one in my college years.