$\sin(x)$ infinite product
24311
Proving $\frac{\sin x}{x} =\left(1-\frac{x^2}{\pi^2}\right)\left(1-\frac{x^2}{2^2\pi^2}\right) \left(1-\frac{x^2}{3^2\pi^2}\right)\cdots$
141273
When is $\sin(x)$ rational?
94425
What is $\sup(\sin(n))$?
18285
Prove that $\prod_{k=1}^{n-1}\sin\frac{k \pi}{n} = \frac{n}{2^{n-1}}$
140523
Infinite sum of ideals
83280
Infinite product $ \prod^{\infty}_{n=0}\left(1-\frac{1}{2^{3n}}-\frac{1}{2^{6n}}\right)$
81124
Infinite product problem: $\sum p_n0$
26562
Inverse of $f(x)=\sin(x)+x$
25646
What is the result of $\infty - \infty$?
30533
Showing that this function is infinitely differentiable
16253
Proof that $|\sin(nx)| \le n|\sin(x)|$
37546
Fourier Series for $|\cos(x)|$
60891
Does $\sum\limits_{k=1}^\infty |\sin(ak)/k|$ converge?
141787
Anybody know a proof of $\prod_{n=1}^\infty\cos(x/2^n)=\sin x/x$.
139113
Does the series $\sum \sin^{(n)}(1)$ converge, where $\sin^{(n)}$ denotes the $n$-fold composition of $\sin$?
34440
Finding Value of the Infinite Product $\prod \Bigl(1-\frac{1}{n^{2}}\Bigr)$
27260
Infinite product with sign changes.