Solve the trig equation $\cos\theta − \sin\theta = 1$
29604
How to solve $\sin x +\cos x = 1$?
63679
Picture/intuitive proof of $\cos(3 \theta) = 4 \cos^3(\theta)-3\cos(\theta)$?
26814
Solve $\int \frac{1}{\sin ^{\frac{1}{2}}x \cos^{\frac{7}{2}}x}dx$
81337
How to solve $(1-\tan^2x)\sec^2x+2^{\tan^2x}=0$
45343
Solve $\cos^{n}x-\sin^{n}x=1$ with $n\in \mathbb{N}$.
2648
Show that the equation $\cos(\sin x)=\sin(\cos x)$ has no real solutions.
60230
Prove that $\frac{1+\sin\theta+i\cos\theta}{1+\sin\theta-i\cos\theta}=\sin\theta+i\cos\theta$
104319
Real solution of $(\cos x -\sin x)\cdot \bigg(2\tan x+\frac{1}{\cos x}\bigg)+2=0.$
82170
Solve $x = \frac{1}{2}\tan(x)$
122395
Integrating $\sec\theta\tan^2\theta d\,\theta$
111102
Prove the Trigonometric Identity: $\frac{\sin x}{1-\cos x} = \frac{1+\cos x}{\sin x}$
122705
Solution of trigonometric equation $0 = x\cos(x)+2$
32705
Trigonometric Equation : $\sin 96^\circ \sin 12^\circ \sin x = \sin 18^\circ \sin 42^\circ \sin (12^\circ -x)$
17168
Find the value of $\sin\frac{2\pi}{7}+\sin\frac{4\pi}{7}+\sin\frac{8\pi}{7}$
148207
Express $\cos 6\theta $ in terms of $\cos \theta$
58483
Determining the general solution for the trigonometric equation $ 5\cos(x)-12\sin (x) = 13 $
125171
Help with this trigonometry problem?