Question

A line of length 5 dm is parallel to vertical plane and inclined to horizontal plane with an angle of 65 degrees. What is the length in side view?

(a) 2.11 dm

(b) 4.53 dm

(c) 5 dm

(d) 0 dm

The question was posed to me in homework.

Enquiry is from Projection of Line Inclined to one Plane and Parallel to other topic in chapter Projection of Lines of Engineering Drawing

Answer 1

The correct answer is (b) 4.53 dm

To explain: Here accordingly the conditions given that line is parallel to vertical plane and inclined to horizontal plane at 55 degrees the top view’s length is the cosine of actual length. 5 dm x sin (65) = 4.53 dm.