### Video Transcript

Given that π is the additive inverse of π, which of the following is true? a) π minus π equals zero, b) π minus π equals one, c) π plus π equals zero, d) π
plus π equals one, or e) π times π equals one.

What is an additive inverse? Itβs what you add to a number to get zero. The additive inverse of π is such that when you add it to π, you get zero. Weβre already told that π is the additive inverse of π, and that means π plus π
must equal zero. It means that π is negative π.