Finding lower bound of trigonometric intergation
80553
Show that,$\int_0^\pi \left|\frac{\sin nx}{x}\right|\mathrm{d}x \ge \frac{2}{\pi}\left(1+\frac12+\cdots+\frac{1}{n}\right)$
38624
Finding a tricky limit
104152
Stars and bars with lower bound on individual parts
52324
Tight bound for $T(n) = T(n^{1/2}) + 1$
15583
Finding the limit of $(1-\cos(x))/x$ as $x\to 0$ with squeeze theorem
131168
Minimizing $\cot^2 A +\cot^2 B + \cot^2 C$ for $A+B+C=\pi$
105988
Find the uniform lower bound of the smallest eigenvalue of a certain matrix
73771
An inequality for a sum of sine functions
145559
Trigonometry problem on product of trig functions.
33100
Trigonomnetric equality involving tg
152074
How to find out the global minimum of the following expression
109171
How to evaluate this trigonometric limit?
125171
Help with this trigonometry problem?
18967
Linear independence of $\sin(x)$ and $\cos(x)$
106803
How to see $\cos x \leq \exp(-x^2/2)$ on $x \in [0,\pi/2]$?
114297
Extremizing sum and difference of lengths using triangle inequality
46736
Limits involving trigonometric functions $f(x)=\lfloor{x^2 \rfloor} \sin^2(\pi x)$