Question

Roots of trigonometric equation $\sin((n+1)\theta) + 2\sin(n\theta) = 0,\;\;\theta\neq k\pi\,\,k\in\mathbb{Z}.$

score 47 · Answer 1 · 2026-04-01 15:43:36

47

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Roots of trigonometric equation $\sin((n+1)\theta) + 2\sin(n\theta) = 0,\;\;\theta\neq k\pi\,\,k\in\mathbb{Z}.$

Published on 01 Apr 2026 - 15:43

score 171 · Answer 2 · 2026-04-03 18:32:22

171

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Given cos(t)=$(1/2)$($e^{it}$+$e^{-it}$), solve for $\cos^{-1}$(x)

Published on 03 Apr 2026 - 18:32

score 131 · Answer 3 · 2026-04-03 20:16:58

131

Views

Find the set of values, which are taken by $\tan(z)$

Published on 03 Apr 2026 - 20:16

score 22k · Answer 4 · 2026-03-28 00:28:52

22k

Views

A way to find this shaded area without calculus?

Published on 28 Mar 2026 - 0:28

score 29 · Answer 5 · 2018-11-28 05:44:02

29

Views

Solving $(\cos x-\sin x)\left(2 \tan x+\frac{1}{\cos x}\right)+2=0$

Published on 28 Nov 2018 - 5:44

score 724 · Answer 6 · 2026-04-09 12:42:45

724

Views

How to calculate a "rational" sine/cosine to specific digits of precision?

Published on 09 Apr 2026 - 12:42

score 243 · Answer 7 · 2018-11-28 14:40:25

Is it impossible to compute $\frac{11\sin(52)}{\sin(116)} = ? $ without knowing the exact value of $\sin(52)$ and $\sin(116)$

score 241 · Answer 8 · 2026-04-09 15:46:28

241

Views

How to find the angle $x$ using the law of sines?

Published on 09 Apr 2026 - 15:46

score 98 · Answer 9 · 2026-04-13 06:57:36

98

Views

Solve a system of trigonometric equations

Published on 13 Apr 2026 - 6:57

score 694 · Answer 10 · 2026-04-08 17:52:17

694

Views

How to calculate distance to point when there is an obstacle in the way?

Published on 08 Apr 2026 - 17:52

score 832 · Answer 11 · 2026-04-11 02:14:12

832

Views

How do we solve for $x$ using law of sines?

Published on 11 Apr 2026 - 2:14

score 146 · Answer 12 · 2018-11-28 21:33:09

146

Views

Proving $1-\cos2a+2\sin a \sin3a = 2 \sin^22a$ and $\sin^22a - \sin^2a = \sin3a\sin a$

Published on 28 Nov 2018 - 21:33

score 291 · Answer 13 · 2018-11-29 00:39:52

291

Views

Solve on the interval $[0,2\pi)$: $4 \sin(x) \cos(x)=1$.

Published on 29 Nov 2018 - 0:39

score 79 · Answer 14 · 2018-11-29 04:43:35

One sided trig identity with conjugates $\frac{(\cos x\cot x)}{\cot x-\cos x}=\frac{\cot x+\cos x}{(\cos x\cot x)}$

score 1.9k · Answer 15 · 2026-04-11 22:30:46

1.9k

Views

Expected value of sum of N sines with random phase differences

Published on 11 Apr 2026 - 22:30

List Question

Roots of trigonometric equation $\sin((n+1)\theta) + 2\sin(n\theta) = 0,\;\;\theta\neq k\pi\,\,k\in\mathbb{Z}.$

Given cos(t)=$(1/2)$($e^{it}$+$e^{-it}$), solve for $\cos^{-1}$(x)

Find the set of values, which are taken by $\tan(z)$

A way to find this shaded area without calculus?

Solving $(\cos x-\sin x)\left(2 \tan x+\frac{1}{\cos x}\right)+2=0$

How to calculate a "rational" sine/cosine to specific digits of precision?

Is it impossible to compute $\frac{11\sin(52)}{\sin(116)} = ? $ without knowing the exact value of $\sin(52)$ and $\sin(116)$

How to find the angle $x$ using the law of sines?

Solve a system of trigonometric equations

How to calculate distance to point when there is an obstacle in the way?

How do we solve for $x$ using law of sines?

Proving $1-\cos2a+2\sin a \sin3a = 2 \sin^22a$ and $\sin^22a - \sin^2a = \sin3a\sin a$

Solve on the interval $[0,2\pi)$: $4 \sin(x) \cos(x)=1$.

One sided trig identity with conjugates $\frac{(\cos x\cot x)}{\cot x-\cos x}=\frac{\cot x+\cos x}{(\cos x\cot x)}$

Expected value of sum of N sines with random phase differences

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