Question

A line of length 5 inches parallel to horizontal plane and inclined to vertical plane with an angle of 35 degrees. What is the length in side view?

(a) 7.28 inches

(b) 2.86 inches

(c) 4.09 inches

(d) 5 inches

The question was posed to me in an international level competition.

This intriguing question originated from Projection of Line Inclined to one Plane and Parallel to other topic in section Projection of Lines of Engineering Drawing

Answer 1

Right answer is (b) 2.86 inches

To explain I would say: Here accordingly the conditions given that line is parallel to horizontal plane and inclined to vertical plane at 35 degrees the side view’s length is the sine of actual length. 5 inches x sin (35) = 2.86 inches.