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Mathematics
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sparrow_2764
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6
Distance between the point of touching in three touching circles
Mar 1, 2023
5
Proving $\sin\frac{\pi}{13}+\sin\frac{3\pi}{13}+\sin\frac{4\pi}{13}=\frac12\sqrt{\frac{13+3\sqrt{13}}2}$
Feb 27, 2023
5
Integrate : $\int e^{x+e^{x+e^x}}\, dx$
Mar 19
4
Prove a relation based on angles $\frac{\pi}{11}$ and $\frac{\pi}{22}$
Apr 4, 2023
4
A series in cosine : $\sum_{j=1}^{n} (-1)^{j-1}\cos\left(\frac{j\pi}{2n+1}\right)$
Apr 6, 2023
4
Prove that in a triangle : $\cot A + \cot B + \cot C \ge \sqrt{3}$
Apr 27, 2023
4
Find the maximum number of elements in the set $M$ such that no two elements have a difference of $5$ or $8$
Apr 29, 2023
4
Estimation of $H_{n,\frac{1}{2}}$
Jun 8
3
Foci of ellipse
Feb 23, 2023
3
System of equations on $\mathbb R$
May 28, 2023