After looking at the list of trigonometric identities, I can't seem to find a way to solve this. Is it solvable? $$\cos (\theta) + \sin (\theta) = x.$$ What if I added another equation to the probl...

Jun 14, 2015 · You probably want to rewrite $\sin$ in terms of $\cos$ via Pythagorean identity. Then you can turn the first equation into a quadratic equation which you can solve for …

Sep 28, 2020 · I've stumbled upon a equation in the form $$A\sin {\theta} + B\cos {\theta} = C$$ What would be the steps necessary to solving it? Thank you.

Dec 9, 2021 · I've tried to solve this using a calculator (didn't return any results), by taking the derivative/antiderivative of both sides, etc, but didn't manage to get anywhere.

Oct 14, 2016 · 1 The simplest solution is to put $\cos 2\theta = 1 - 2\sin^2\theta$, after which you get a cubic in terms of $\sin\theta$. Fortunately, that has an obvious solution using the …

Jun 13, 2016 · I have this Final Math Exam Review, for Math Analysis/Trig = Pre-calculus. So I stumbled upon my review and this section arose where it told me to Solve the equation on the …

Jan 31, 2021 · How do I write an equation to solve for θ θ? Could someone go through all the steps please? Because I have to solve many similar problems. I already know that there may …

Nov 3, 2017 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …

Apr 21, 2016 · I have simplified my equation to the following. I can't quite remember how to solve for $\theta$. $$ \theta - \sin \theta = 0.6\pi $$ I tried to rearrange and make use of $\sin^2\theta …

Learn how to use the Pythagorean identity to solve for angles and view step-by-step examples for you to improve your math knowledge and skills.