Question

Triangle with 60 degree show

score 53 · Answer 1 · 2026-03-25 23:51:35

53

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Triangle with 60 degree show

Published on 25 Mar 2026 - 23:51

score 4.5k · Answer 2 · 2018-05-14 14:17:05

4.5k

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Proving that $\sin(z+w) = \sin(w) \cos(z) + \sin(z) \cos(w)$ using complex exponentials

Published on 14 May 2018 - 14:17

score 451 · Answer 3 · 2018-05-14 14:26:36

Solution of $\sqrt{\cot(3x)+\sin^2(x)-\frac{1}{4}}+\sqrt{\sqrt{3}\cos x+\sin x-2}=\sin\left(\frac{3x}{2}\right)-\frac{1}{\sqrt{2}}$

score 174 · Answer 4 · 2018-05-14 17:38:35

174

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Amplitude of mass-spring system after application of impulse forcing function

Published on 14 May 2018 - 17:38

score 1.3k · Answer 5 · 2018-05-14 23:32:49

1.3k

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Find the radius of two circular arcs in a reverse curve separated by a tangent line

Published on 14 May 2018 - 23:32

score 61 · Answer 6 · 2026-03-31 14:12:29

61

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How to solve the following simultaneous equations?

Published on 31 Mar 2026 - 14:12

score 132 · Answer 7 · 2018-05-15 02:24:21

132

Views

How to find the fundamental period of the product of two trig functions for Fourier Series?

Published on 15 May 2018 - 2:24

score 303 · Answer 8 · 2026-03-25 06:27:46

303

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Integrate $\sin^{-1}\frac{2x}{1+x^2}$

Published on 25 Mar 2026 - 6:27

score 89 · Answer 9 · 2018-05-15 16:48:45

89

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If $\cos a = \cos a \cos b - \sin a \sin b$, then $b = 2n\pi$

Published on 15 May 2018 - 16:48

score 1k · Answer 10 · 2026-03-25 11:19:19

1k

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Proving $\lim_{x\to\pi/2^-}\tan{x}=\infty$, using $\epsilon$-$\delta$

Published on 25 Mar 2026 - 11:19

score 119 · Answer 11 · 2026-04-01 10:50:27

119

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Finding roots of trigonometric function

Published on 01 Apr 2026 - 10:50

score 34 · Answer 12 · 2026-03-28 20:09:34

34

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Why can I cancel this $\sum_i 2\cos^3(\alpha_i)\sin\alpha_i$ term for pairs 180degrees apart?

Published on 28 Mar 2026 - 20:09

score 3.9k · Answer 13 · 2026-03-26 15:16:31

3.9k

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In a triangle, does an angle bisector necessarily bisect the opposite side?

Published on 26 Mar 2026 - 15:16

score 190 · Answer 14 · 2026-03-26 02:44:43

190

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Integrating integer powers of $\cos(\theta)$

Published on 26 Mar 2026 - 2:44

score 570 · Answer 15 · 2026-03-25 14:22:10

570

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Is this a valid mathematical proof that $\pi = 4\sqrt{\sqrt{5/4}-\sqrt{1/4}}$?

Published on 25 Mar 2026 - 14:22

List Question

Triangle with 60 degree show

Proving that $\sin(z+w) = \sin(w) \cos(z) + \sin(z) \cos(w)$ using complex exponentials

Solution of $\sqrt{\cot(3x)+\sin^2(x)-\frac{1}{4}}+\sqrt{\sqrt{3}\cos x+\sin x-2}=\sin\left(\frac{3x}{2}\right)-\frac{1}{\sqrt{2}}$

Amplitude of mass-spring system after application of impulse forcing function

Find the radius of two circular arcs in a reverse curve separated by a tangent line

How to solve the following simultaneous equations?

How to find the fundamental period of the product of two trig functions for Fourier Series?

Integrate $\sin^{-1}\frac{2x}{1+x^2}$

If $\cos a = \cos a \cos b - \sin a \sin b$, then $b = 2n\pi$

Proving $\lim_{x\to\pi/2^-}\tan{x}=\infty$, using $\epsilon$-$\delta$

Finding roots of trigonometric function

Why can I cancel this $\sum_i 2\cos^3(\alpha_i)\sin\alpha_i$ term for pairs 180degrees apart?

In a triangle, does an angle bisector necessarily bisect the opposite side?

Integrating integer powers of $\cos(\theta)$

Is this a valid mathematical proof that $\pi = 4\sqrt{\sqrt{5/4}-\sqrt{1/4}}$?

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