Solving trigonometric equations involving multiple angles

Examples0/5

All in One Place

Everything you need for JC, LC, and college level maths and science classes.

Learn with Ease

We’ve mastered the national curriculum so that you can revise with confidence.

Instant Help

24/7 access to the best tips, walkthroughs, and practice exercises available.

Make math click 🤔 and get better grades! 💯Join for Free

0/5

Examples

Lessons

Solve the following equations
i) State the general solution
ii) $0 \leq x \leq 2\pi$ $0 \leq x \leq 2 π$
1. $\sin 3x = - {1 \over 2}$
2. $\cos 2x = {\sqrt2 \over 2}$
3. $\tan {x \over 2} = -1$
4. $3\sin^2 2x -7 \sin 2x = 1 - 5 \sin 2x$
Solve: $\sin 2x - \cos 2x = 0$ $sin 2 x - cos 2 x = 0$
$-180^\circ \leq x \leq 180^\circ$ $- 18 0^{\circ} \leq x \leq 18 0^{\circ}$

No Javascript

It looks like you have javascript disabled.

You can still navigate around the site and check out our free content, but some functionality, such as sign up, will not work.

If you do have javascript enabled there may have been a loading error; try refreshing your browser.