Exit fullscreen mode

Trigonometry: Compound Angles

Review question

Can we solve $\cos\theta - \sin (2\theta) + \cos (3\theta) - \sin (4\theta) = 0$?
Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R8648

Printable/supporting materials Printable version Fullscreen mode Teacher notes

Question

Give the general solutions of the following equations

\(2\sin 3\theta - 7 \cos 2\theta + \sin \theta + 1 = 0\),
\(\cos\theta - \sin 2\theta + \cos 3\theta - \sin 4\theta = 0\).