Sin(n) and cos(n) dense in $[-1,1]
22865
Sine function dense in $[-1,1]$
90590
Prove that the following set is dense
30105
Multiples of an irrational number forming a dense subset
144188
Prove that $\cos(z)$ and $\sin(z)$ are surjective over the complex numbers.
92740
prove that $\mathbb{Q}^n$is dense subset of $\mathbb{R^n}$
95294
Dense subset of $C[0,1]$ which preserves rationals
21580
Covergence test of $\sum_{n\geq 1}{\frac{|\sin n|}{n}}$
70301
$\sin(n)$ subsequence limits set
281
How one can prove $\prod_{k=1}^{n-1} (\cos\theta-\cos(k\pi/n)) = 2^{1-n}\sin(n\theta)\csc\theta$?
2402
Does $\sin n$ have a maximum value for natural number $n$?
33396
Generalizing a Trig Identity
11744
Maximum and minimum of $f(x)=\cos(\sin(x))-\sin(\cos(x))$
101329
Avoiding numerical cancellation question for $\sin x -\sin y$ for $x \approx y$
38185
Prove that $\{\cos(nx) : n=1, ... ,\infty \}$ is bounded but not totally bounded in $C([0,\pi])$
78915
Density of the set $S=\{m/2^n| n\in\mathbb{N}, m\in\mathbb{Z}\}$ on $\mathbb{R}$?
31990
Is $\{\frac{m}{10^n}\mid m,n\in\mathbb Z,\ n\geq 0\}$ dense in $\mathbb R$?
87848
Formal proof for $(-1) \times (-1) = 1$