What is the Formula of Sin C + Sin D ?

Solution :

The formula of sin C + sin D is 2 sin(\(C + D\over 2\)) cos(\(C – D\over 2\)).

Example : Express sin \(4\theta\) + sin \(2\theta\) as a product.

Solution : We have,

sin \(4\theta\) + sin \(2\theta\) = 2 sin(\(4\theta + 2\theta\over 2\)) cos(\(4\theta – 2\theta\over 2\))

= 2 sin \(3\theta\) cos \(\theta\)


Similar Formulas

What is the Formula of Sin C – Sin D ?

What is the Formula of Cos C + Cos D ?

What is the Formula of Cos C – Cos D ?

Leave a Comment

Your email address will not be published.