10:05 AM
Do we need tag? We already have .
4

I'm asked to solve $\tan{x} = \tan{3x}$ Here's my attempt: $$\tan{x} = \tan{3x}$$ $$\tan{x} = \tan{(x + 2x)}$$ $$\tan{x} = \frac{\tan{x} + \tan{2x}}{1-\tan{x}\tan{2x}}$$ Recall the identity: $$\tan{2x} = \frac{2\tan{x}}{1-\tan^2{x}}$$ So then we have: $$\tan{x} = \frac{\tan{x} + \frac{2\tan{... 0 I'm looking for methods on how to solve;$$a_1 \sin (x+y) + a_2 \sin (x-y)=0 where 1) $a_1, a_2$ are constants 2) $a_1, a_2$ are functions of $x$ and $y$

2 hours later…
12:32 PM
Now are down to 50.