Question

How do I find all solutions to $\sin(x+(\pi/7))=-1/\sqrt{2}$?

score 91 · Answer 1 · 2026-04-13 15:24:56

91

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How do I find all solutions to $\sin(x+(\pi/7))=-1/\sqrt{2}$?

Published on 13 Apr 2026 - 15:24

score 82 · Answer 2 · 2026-04-14 10:12:35

Given triangle ABC with B = 37°, a = 25 feet, and b = 16 feet, if the law of cosines is used to solve the triangle...

score 632 · Answer 3 · 2026-04-16 19:39:06

632

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$18 \sec^2θ − 16 \tan θ \sec θ − 15 = 0$ Find all solutions in the interval $0° ≤ θ < 360°$.

Published on 16 Apr 2026 - 19:39

score 174 · Answer 4 · 2026-04-15 02:32:58

174

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Integrating $\sqrt{1+\cos^2}$

Published on 15 Apr 2026 - 2:32

score 101 · Answer 5 · 2026-04-14 20:00:56

101

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Relation between $\sin(t)$($\cos(t)$) and $\sin(at)$ ($\cos(at)$) when both are rational

Published on 14 Apr 2026 - 20:00

score 277 · Answer 6 · 2026-04-10 08:46:30

277

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arctan equation question

Published on 10 Apr 2026 - 8:46

score 82 · Answer 7 · 2026-04-09 07:16:46

82

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How do I solve a trigonometric equation?

Published on 09 Apr 2026 - 7:16

score 657 · Answer 8 · 2026-04-17 02:59:04

657

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$(\sin \alpha + \cos\beta)^2 + (\cos\alpha - \sin\beta)^2 - 2\sin(\alpha+\beta) = 2$

Published on 17 Apr 2026 - 2:59

score 1.7k · Answer 9 · 2026-04-13 06:11:40

1.7k

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The function $e^{iz}$ maps $[0,2\pi)$ bijectively to $\{z\in\Bbb C:|z|=1\}$

Published on 13 Apr 2026 - 6:11

score 108 · Answer 10 · 2026-04-09 22:02:24

108

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Integration goniometric functions with using substitution

Published on 09 Apr 2026 - 22:02

score 16.9k · Answer 11 · 2026-04-15 06:09:24

16.9k

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Why is $\cos (90)=-0.4$ in WebGL?

Published on 15 Apr 2026 - 6:09

score 38 · Answer 12 · 2026-04-08 21:58:06

38

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Need help simplifying trigonometry

Published on 08 Apr 2026 - 21:58

score 215 · Answer 13 · 2026-04-15 20:51:31

215

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Do there exist $a_k$ and $b_k$ so the equation $\sum\limits_{k=1}^{n} (a_k \sin(kx) + b_k \cos(kx)) = 0$ has no roots?

Published on 15 Apr 2026 - 20:51

score 618 · Answer 14 · 2026-04-16 21:04:27

618

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Finding cos(a-B) using tan a = 4/3 in quad III and cos B = 12/13 in quad IV

Published on 16 Apr 2026 - 21:04

score 620 · Answer 15 · 2026-04-18 23:21:54

620

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$tan \theta = -12/5$ and $90^\circ < \theta < 180 ^\circ$, then find the exact values of $\cos \theta/2$ and $\tan \theta/2$

Published on 18 Apr 2026 - 23:21

List Question

How do I find all solutions to $\sin(x+(\pi/7))=-1/\sqrt{2}$?

Given triangle ABC with B = 37°, a = 25 feet, and b = 16 feet, if the law of cosines is used to solve the triangle...

$18 \sec^2θ − 16 \tan θ \sec θ − 15 = 0$ Find all solutions in the interval $0° ≤ θ < 360°$.

Integrating $\sqrt{1+\cos^2}$

Relation between $\sin(t)$($\cos(t)$) and $\sin(at)$ ($\cos(at)$) when both are rational

arctan equation question

How do I solve a trigonometric equation?

$(\sin \alpha + \cos\beta)^2 + (\cos\alpha - \sin\beta)^2 - 2\sin(\alpha+\beta) = 2$

The function $e^{iz}$ maps $[0,2\pi)$ bijectively to $\{z\in\Bbb C:|z|=1\}$

Integration goniometric functions with using substitution

Why is $\cos (90)=-0.4$ in WebGL?

Need help simplifying trigonometry

Do there exist $a_k$ and $b_k$ so the equation $\sum\limits_{k=1}^{n} (a_k \sin(kx) + b_k \cos(kx)) = 0$ has no roots?

Finding cos(a-B) using tan a = 4/3 in quad III and cos B = 12/13 in quad IV

$tan \theta = -12/5$ and $90^\circ < \theta < 180 ^\circ$, then find the exact values of $\cos \theta/2$ and $\tan \theta/2$

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