How do I simplify $\sqrt{3}(\cot 70^\circ + 4 \cos 70^\circ )$?
74143
Simplifying and evaluating $\cot 70^\circ+4\cos 70^\circ$
5747
$\cos(\arcsin(x)) = \sqrt{1 - x^2}$. How?
130439
Finding square roots of $\sqrt 3 +3i$
32183
A "fast" way for  computing $ \prod \limits_{i=1}^{45}(1+\tan i^\circ) $?
81750
$4 \sin 72^\circ \sin 36^\circ = \sqrt 5$
75457
How do i simplify the following: $\sum_{i=1}^n (3i^2+4) - \sum_{j=2}^{n+1} (3j^2+1)$
57594
How to simplify $\frac{\sqrt{4+h}-2}{h}$
16866
How to Prove $a^3 \cos (B-C) + b^3 \cos (C-A)+ c^3 \cos (A-B)=3abc$?
19940
How to show that $A^3+B^3+C^3 - 3ABC = (A+B+C)(A+B\omega+C\omega^2)(A+B\omega^2+C\omega)$ indirectly?
40615
Solve for $x$ in the $80^\circ$-$80^\circ$-$20^\circ$ triangle
134587
Solve $x\sqrt{x\sqrt{x\sqrt{x\dots}}} = 4$
142470
$\mathbb{Q}(\sqrt{p},\sqrt[3]{q})= \mathbb{Q}(\sqrt{p}\cdot \sqrt[3]{q})$ ??
54512
How do I prove: $\cos (\theta + 90^\circ) \equiv - \sin \theta $
140983
$ \tan 1^\circ \cdot \tan 2^\circ \cdot \tan 3^\circ \cdots \tan 89^\circ$
109952
Find the minimal polynomial of $\sqrt2 + \sqrt3 $ over $\mathbb Q$
138501
Is $\mathbf{Q}(\sqrt{2},\sqrt{3}) = \mathbf{Q}(\sqrt{6})$?
1210
Write an expression for $(\cos θ + i\sin θ)^4$ using De Moivre’s Theorem.