# Question: this lab requires trigonometry and angular kinetics to help understand...

###### Question details

This lab requires trigonometry and angular kinetics.
To help understand what to do in the lab we want you to review some
trigonometry. The images you will be observing are a 2d projection
of a 3d image. for a symmetrical object such as a sphere we can use
some techniques to reproduce the 3d object.

Diagram 1

If the side view of a cylinder is given, and the variables R (total radius) and d (distance of a point from the center on the image, what is the formula to calculate angle (theta) of point a?