# Destructive interference

Two wave sources at the same frequency are said to be coherent.

Plot the graph of y(t)=sin(t)+sin(t+pi) and set the y axis limits to -1<=y<=1.

Explain the result using trigonometric identities.

#wavesuperposition #destructiveinterference #trigonometricidentities #engineeringmaths

plotXpose app is available on Google Play

Google Play and the Google Play logo are trademarks of Google LLC.

Versions will shortly be available for iOS and Windows.

Google Play and the Google Play logo are trademarks of Google LLC.

Versions will shortly be available for iOS and Windows.

plotXpose app is a companion to the book Mathematics for Electrical Engineering and Computing by Mary Attenborough, published by Newnes, 2003.