To calculate the visual angle subtended by an object you need to know
A) Both its distance from the observer and the width or height of the object
B) Only its distance
C) Either its height or width, whichever is most relevant
D) None of the above

Question

Quizplus · Accepted Answer

To calculate the visual angle subtended by an object, you need to know both its distance from the observer and the width or height of the object. This is because the visual angle is determined by the ratio of the size of the object to its distance from the observer.

To Calculate the Visual Angle Subtended by an Object You