What is theta +2kpi in trigonometry

often denotes an angle, where is conventionally used.

Adding , where is any integer, is the same as saying that is equivalent to etc.

This is the case because a complete revolution has an angle measure of , which means that adding any multiple of to a given angle results in the same angle.

Example:

If , then . This is also true if , which gives .

The first digit is in the middle school 100s place