List questions from trigonometry

Published on 12 Apr 2026 - 18:58

78

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A proof concerning unit vectors in space

Published on 12 Apr 2026 - 0:02

381

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$\cos (n \phi)$ in terms of $\cos (\phi)$

Published on 14 Apr 2026 - 15:00

654

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Asymptotic expansion of $u_{n + 1} = \frac12 \arctan(u_n)$

Published on 14 Apr 2026 - 4:34

1.8k

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Niven’s theorem proof.

Published on 15 Apr 2026 - 12:59

689

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How to find distance from point to axis at specific angle

Published on 13 Apr 2026 - 1:04

183

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Simultaneous equation of trig functions

Published on 09 Apr 2026 - 17:47

253

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Finding rotational axis of sphere from 2 points and measurements

Published on 25 Mar 2026 - 9:26

257

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How to find the distance between two parallel lines?

Published on 10 Apr 2026 - 16:57

153

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Is the denominator never zero in sec, cosec and cot functions?

Published on 12 Apr 2026 - 18:57

79

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What exactly is going on here? (Trigonometric functions)

Published on 15 Apr 2026 - 13:07

1.8k

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Why isn't $\arctan(\tan x)=x$?

Published on 15 Apr 2026 - 9:11

221

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Proving that ${n+3\choose 3} =\frac{n+2}{2}\sum_{k=1}^{n+1}\csc^2\frac{k\pi}{n+2}$

Published on 16 Apr 2026 - 4:54

30

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Formula to find solution of a multi-angled trigonometry equation

Published on 11 Apr 2026 - 13:34

311

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When to use radians or degrees?

Published on 13 Apr 2026 - 23:38

List Question

Finding an angle of a triangle inscribed in a rectangle

A proof concerning unit vectors in space

$\cos (n \phi)$ in terms of $\cos (\phi)$

Asymptotic expansion of $u_{n + 1} = \frac12 \arctan(u_n)$

Niven’s theorem proof.

How to find distance from point to axis at specific angle

Simultaneous equation of trig functions

Finding rotational axis of sphere from 2 points and measurements

How to find the distance between two parallel lines?

Is the denominator never zero in sec, cosec and cot functions?

What exactly is going on here? (Trigonometric functions)

Why isn't $\arctan(\tan x)=x$?

Proving that ${n+3\choose 3} =\frac{n+2}{2}\sum_{k=1}^{n+1}\csc^2\frac{k\pi}{n+2}$

Formula to find solution of a multi-angled trigonometry equation

When to use radians or degrees?

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