## Algebra 2 Common Core

Published by Prentice Hall

# Chapter 14 - The Trigonometric Functions - 14-1 Trigonometric Identities - Practice and Problem-Solving Exercises: 80

#### Answer

$135^{\circ}$

#### Work Step by Step

The coterminal angle must be the original angle + or - some integer multiple of $360^{\circ}$. For this problem, $$-225^{\circ}+360^{\circ}=135^{\circ}$$ gives a coterminal angle between $0^{\circ}$ and $360^{\circ}$.

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