Trigonometric equations involving $\prod_{r=1}^{n}\cos\left(\frac{x}{2^n}\right)$
63617
Evaluating limit $\lim_{k\to \infty}\prod_{r=1}^k\cos{\left(\frac {x}{2^r}\right)}$
46665
Solving $\cos x+\sin x-1=0$
73538
solving $\cos z + \sin z = i$
146221
Find the product $\prod_{n=1}^{\infty} (1+x^{2n-1}) $
81102
Cosine of the sum of two solutions of trigonometric equation $a\cos \theta + b\sin \theta = c$
99314
Closed form of infinite product $ \prod\limits_{k=0}^\infty \left(1+\frac{1}{2^{2^k}}\right)$
117785
Express solutions of equation $ \tan x= x $ in closed form
7698
Help finding the limit of $\lim_{n \to \infty}\prod_{k=1}^{n}\left(1+\frac{1}{n}f\left(\frac{k}{n}\right)\right)$.
83080
Question regarding $f(n)=\cot^2\left(\frac\pi n\right)+\cot^2\left(\frac{2\pi}n\right)+\cdots+\cot^2\left(\frac{(n-1)\pi}n\right)$
6558
Evaluating the infinite product $\prod\limits_{k=2}^\infty \left ( 1-\frac1{k^2}\right)$
138683
Proving $\prod_{i=2}^{i=n} \left(1-\frac{1}{i^2}\right) = \frac{n+1}{2n}$ by induction
45742
Prove that ${\left(\frac{x+1}{2}\right)}^{x+1} \leq x^x$
157833
Limit of the Product $\prod_{k=1}^n\left(\frac{2k-1}{2k}\right)$
281
How one can prove $\prod_{k=1}^{n-1} (\cos\theta-\cos(k\pi/n)) = 2^{1-n}\sin(n\theta)\csc\theta$?
40869
Solving Trigonometric Limits
145559
Trigonometry problem on product of trig functions.
96366
show that for any n $\in$ $\Bbb N$ , if n $\ge$ 2, then $\prod_\limits{i=2}^n $ $\left( 1-\frac{1}{i^2}\right)$ = $\frac{n+1}{2n}$