Solve for $θ$: $θ − sin(θ) = \frac{2A}{r^2}$
100404
Angle subtended at the centre by a segment of a circle
154216
Solve $\sin(z) = z$ in complex numbers
54512
How do I prove: $\cos (\theta + 90^\circ) \equiv - \sin \theta $
40615
Solve for $x$ in the $80^\circ$-$80^\circ$-$20^\circ$ triangle
51729
Solve the following equation: $\sqrt {\sin x - \sqrt {\cos x + \sin x} } = \cos x$
31852
An elegant way to solve $\frac {\sqrt3 - 1}{\sin x} + \frac {\sqrt3 + 1}{\cos x} = 4\sqrt2 $
142610
Solving $\sin x\cos3x+\cos x\sin3x=\sqrt{3}/2$ in the interval $[0,2\pi]$
56170
Solve a complex equation symbolically?
149913
Evaluate $\iint dy\,dx;\frac{\pi}{4}\leq\theta \leq\frac{3\pi}{4};0\leq r\leq2$
113080
Prove $\tan\big(\frac{\pi}{2} -\theta \big) = \cot \theta$
108245
Solving the complex equation $\sin(z) = \cos(z)$
123867
Solve $(a + b\sin(x))\sin(x) = p$ for $x$
37985
Show that $|x|^2 = |y|^2$ with $A$ orthogonal and $Ax = \cos (θ)x − \sin (θ)y$, $Ay = \sin (θ)x + \cos (θ) y$
70765
If $\frac{\tan(a+b-c)}{\tan(a-b+c)}=\frac{\tan c}{\tan b}$, then $\sin(b-c)=0$ or $\sin 2a + \sin2b + \sin 2c=0$
122169
Prove $\sin(\pi/2)=1$ using Taylor series
44391
How can I prove $n - 2\sqrt{n} = \Theta(n)$
153158
how to get $dx\; dy=r\;dr\;d\theta$