Question

Check the proof that $f(x) = \cos({x})\cdot\cos({\sqrt{3}x})$ is not periodic

score 364 · Answer 1 · 2026-03-25 21:49:56

364

Views

Check the proof that $f(x) = \cos({x})\cdot\cos({\sqrt{3}x})$ is not periodic

Published on 25 Mar 2026 - 21:49

score 72 · Answer 2 · 2026-02-23 03:57:00

72

Views

Why Rolle's theorem is giving two roots here?

Published on 23 Feb 2026 - 3:57

score 153 · Answer 3 · 2026-04-04 10:43:53

153

Views

What is the sign and exact value of this sum: $\sum_{n=0}^{+\infty}(-1)^n \tan(\frac{1}{n!})$?

Published on 04 Apr 2026 - 10:43

score 131 · Answer 4 · 2018-06-30 02:12:52

131

Views

Proving $ 2\arcsin\left(\sinh(x)\right) + \arccos\left( 2 - \cosh(2x) \right) = 0 $

Published on 30 Jun 2018 - 2:12

score 933 · Answer 5 · 2026-03-26 16:03:53

933

Views

Finding third point of right triangle

Published on 26 Mar 2026 - 16:03

score 121 · Answer 6 · 2018-06-30 21:09:06

121

Views

Calculate $\cos(\frac{2\pi}{5})$ in terms of $\sin(\frac{\pi}{5})$

Published on 30 Jun 2018 - 21:09

score 396 · Answer 7 · 2018-06-30 21:49:22

396

Views

I confused with trigonometry. $\sin x - \cos x = 1$

Published on 30 Jun 2018 - 21:49

score 498 · Answer 8 · 2026-03-30 14:59:04

498

Views

How can I find the possible phase shifts (C) of a sine function given amplitude, midline, and frequency?

Published on 30 Mar 2026 - 14:59

score 44 · Answer 9 · 2018-07-01 12:19:50

44

Views

Trigonometry(Compound Angles)

Published on 01 Jul 2018 - 12:19

score 562 · Answer 10 · 2026-03-26 16:07:08

562

Views

find side of triangle with given a median, a length of side and an angle

Published on 26 Mar 2026 - 16:07

score 130 · Answer 11 · 2026-03-28 15:25:55

130

Views

Prove that $\cos{x} \cdot \cos{\sqrt{3}x} = 1$ has exactly one solution at $x=0$

Published on 28 Mar 2026 - 15:25

score 524 · Answer 12 · 2018-07-02 10:17:52

524

Views

Eliminating $\theta$ from $a\cos(\theta-\alpha)=x$ and $b\cos(\theta-\beta)=y$

Published on 02 Jul 2018 - 10:17

score 94 · Answer 13 · 2026-03-25 11:12:35

94

Views

Tangent line with trigonometry and implicit differentiation

Published on 25 Mar 2026 - 11:12

score 282 · Answer 14 · 2026-03-25 04:42:40

282

Views

how to get $\sum_{k=1}^\infty \arctan\biggr(\frac{10k}{(3k^2+2)(9k^2-1)}\biggr)=\log3-\frac{\pi}{4}$

Published on 25 Mar 2026 - 4:42

score 1.3k · Answer 15 · 2026-03-25 15:47:06

1.3k

Views

Addition of two inverse trigonometric functions

Published on 25 Mar 2026 - 15:47

List Question

Check the proof that $f(x) = \cos({x})\cdot\cos({\sqrt{3}x})$ is not periodic

Why Rolle's theorem is giving two roots here?

What is the sign and exact value of this sum: $\sum_{n=0}^{+\infty}(-1)^n \tan(\frac{1}{n!})$?

Proving $ 2\arcsin\left(\sinh(x)\right) + \arccos\left( 2 - \cosh(2x) \right) = 0 $

Finding third point of right triangle

Calculate $\cos(\frac{2\pi}{5})$ in terms of $\sin(\frac{\pi}{5})$

I confused with trigonometry. $\sin x - \cos x = 1$

How can I find the possible phase shifts (C) of a sine function given amplitude, midline, and frequency?

Trigonometry(Compound Angles)

find side of triangle with given a median, a length of side and an angle

Prove that $\cos{x} \cdot \cos{\sqrt{3}x} = 1$ has exactly one solution at $x=0$

Eliminating $\theta$ from $a\cos(\theta-\alpha)=x$ and $b\cos(\theta-\beta)=y$

Tangent line with trigonometry and implicit differentiation

how to get $\sum_{k=1}^\infty \arctan\biggr(\frac{10k}{(3k^2+2)(9k^2-1)}\biggr)=\log3-\frac{\pi}{4}$

Addition of two inverse trigonometric functions

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