Solve for θ: $y = \arctan\Bigl(\frac{x· \sin(θ)- \sin(θ·x)}{x·\cos(θ)-\cos(θ·x)}\Bigr)$
617
Find θ: $β=\arctan\frac{(R+r)·\sin(θ)-r·\sin(θ(1+\frac{R}{r}))}{(R+r)·\cos(θ)-r·\cos(θ(1+\frac{R}{r}))}$
123867
Solve $(a + b\sin(x))\sin(x) = p$ for $x$
113080
Prove $\tan\big(\frac{\pi}{2} -\theta \big) = \cot \theta$
9539
$\alpha$ and $\beta$ are solution of $a \cdot \tan\theta + b \cdot \sec\theta = c$ show $ \tan(\alpha + \beta) = \frac{2ac}{a^2 - c^2}$
60709
How do I get $\cos{\theta} \lt \frac{\sin{\theta}}{\theta} \lt 1$?
48956
Simplify $\arctan (\frac{1}{2}\tan (2A)) + \arctan (\cot (A)) + \arctan (\cot ^{3}(A)) $
104319
Real solution of $(\cos x -\sin x)\cdot \bigg(2\tan x+\frac{1}{\cos x}\bigg)+2=0.$
152169
How would we solve this trigonometric equation using vectors?
71796
Proving $\rm \frac i 2 \ln\frac {x+i}{x-i}=\arctan x$ .
36128
Using differentiation for computing $\int_{0}^{1}\frac{\arctan(ax)}{x\sqrt{1-x^2}}\,dx$
2676
Finding $\frac {d(\tan \theta)}{d\theta}$
89309
How to solve this trigonometric system of equations numerically?
77810
Solving Trigonometric Derivatives
31575
Solving trigonometric equations of the form $a\sin x + b\cos x = c$
79212
Find the general solution of $y'= a^{x + y}$ where y is the function
35712
Solve for n: $\varphi(2n)=\varphi(3n)$
108808
$x =r\cos \theta$ and $y = r\sin\theta$, determine $\frac{\partial r}{\partial x}$ and $\frac{\partial \theta}{\partial x}$