Is this :$\cos(\sin x) > \sin(\cos x)$ true and if it is how I can prove it?
2648
Show that the equation $\cos(\sin x)=\sin(\cos x)$ has no real solutions.
144188
Prove that $\cos(z)$ and $\sin(z)$ are surjective over the complex numbers.
101448
Is $\sin^2(z) + \cos^2(z)=1$ still true for $z \in \Bbb{C}$?
57750
Solve identity: $\frac {\sin x}{1-\cos x} = \frac {1+\cos x}{\sin x}$
43605
If $\sin(a)\sin(b)\sin(c)+\cos(a)\cos(b)=1$ then find the value of $\sin(c)$
44119
Prove that $\cos (A + B)\cos (A - B) = {\cos ^2}A - {\sin ^2}B$
40556
Why is $\sin(\alpha+\beta)=\sin\alpha\cos\beta+\sin\beta\cos\alpha$
149447
Proving $\sin (x)=\cos (90^\circ-x)$
40235
How would I differentiate $\sin{x}^{\cos{x}}?$
97213
Why does $\sin(0)$ exist?
23288
Prove that $x^2<\sin x \tan x$ as $x \to 0$
45227
If $\sin \theta+\cos\theta+\tan\theta+\cot\theta+\sec\theta+\csc\theta=7$, then $\sin 2\theta$ is a root of $x^2 -44x +36=0$ My own bonafide attempt.
5747
$\cos(\arcsin(x)) = \sqrt{1 - x^2}$. How?
78528
Trigonometric fraction Inequality question
11711
Prove trigonometry identity for $\cos A+\cos B+\cos C$
96388
Prove $\sin(x)\tan(x) > x^2$ for $x \in ( \,0, \frac{\pi}{2}) \,$
129890
Proving inequality $|\sin(n\theta) |\le n\sin\theta$