Main content

# Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)

This original Khan Academy video was translated into isiXhosa by Lwazi Pambuka. The translation project was made possible by ClickMaths: http://www.clickmaths.org

If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

This original Khan Academy video was translated into isiXhosa by Lwazi Pambuka. The translation project was made possible by ClickMaths: http://www.clickmaths.org