Question

What's the biggest subset of $R$ for which $\sin(x)$ is injective?

score 36 · Answer 1 · 2018-09-21 14:59:03

36

Views

What's the biggest subset of $R$ for which $\sin(x)$ is injective?

Published on 21 Sep 2018 - 14:59

score 453 · Answer 2 · 2026-03-25 11:14:50

453

Views

Why are the laws of sines/cosines "laws" and not "theorems"?

Published on 25 Mar 2026 - 11:14

score 63 · Answer 3 · 2018-09-22 00:51:18

63

Views

Solving a trigonometric equation from $[0,2\pi]$

Published on 22 Sep 2018 - 0:51

score 327 · Answer 4 · 2018-09-22 01:51:10

327

Views

Find the equation of the tangent line to the curve $f(x)=2\sec(x) - 4$ at the point $[(\pi/6),f(\pi/6)]$

Published on 22 Sep 2018 - 1:51

score 166 · Answer 5 · 2018-09-22 01:52:19

166

Views

How can we determine the period of $\left(\sin 4x\right)^3$ and $\sin\frac{x}{2}+\sin\frac{x}{3}$?

Published on 22 Sep 2018 - 1:52

score 915 · Answer 6 · 2018-09-22 15:52:06

915

Views

Prove Apollonius's theorem by using a parallelogram

Published on 22 Sep 2018 - 15:52

score 1.4k · Answer 7 · 2026-03-26 00:58:43

1.4k

Views

Rotation matrix along a custom axis

Published on 26 Mar 2026 - 0:58

score 3.6k · Answer 8 · 2026-03-27 12:03:16

3.6k

Views

Finding the area of a $15-75-90$ triangle with the length of the hypotenuse included without using trigonometric functions.

Published on 27 Mar 2026 - 12:03

score 121 · Answer 9 · 2018-09-23 02:58:34

121

Views

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

Published on 23 Sep 2018 - 2:58

score 204 · Answer 10 · 2018-09-23 07:32:03

204

Views

Calculating $\sin 45^\circ$ two ways gives $1/\sqrt{2}$ and $\sqrt{1/2}/1$. What went wrong?

Published on 23 Sep 2018 - 7:32

score 148 · Answer 11 · 2026-04-10 03:33:01

148

Views

Further simplify $\tan(\alpha+\beta)-\tan(\beta)$

Published on 10 Apr 2026 - 3:33

score 188 · Answer 12 · 2018-09-23 13:41:37

188

Views

Solving the trigonometric equation $2\sin(t)-1-\sin^2(t) = 0$

Published on 23 Sep 2018 - 13:41

score 54 · Answer 13 · 2026-04-09 02:50:49

54

Views

Finding Cartesian/symmetric form using $x,y$ and $z$

Published on 09 Apr 2026 - 2:50

score 600 · Answer 14 · 2026-04-11 08:21:48

600

Views

Where is inverse tangent positive?

Published on 11 Apr 2026 - 8:21

score 72 · Answer 15 · 2026-03-25 12:33:19

72

Views

How to graph $f(x)=(1-\cos(2x-2))/(x-1)^2$ analytically?

Published on 25 Mar 2026 - 12:33

List Question

What's the biggest subset of $R$ for which $\sin(x)$ is injective?

Why are the laws of sines/cosines "laws" and not "theorems"?

Solving a trigonometric equation from $[0,2\pi]$

Find the equation of the tangent line to the curve $f(x)=2\sec(x) - 4$ at the point $[(\pi/6),f(\pi/6)]$

How can we determine the period of $\left(\sin 4x\right)^3$ and $\sin\frac{x}{2}+\sin\frac{x}{3}$?

Prove Apollonius's theorem by using a parallelogram

Rotation matrix along a custom axis

Finding the area of a $15-75-90$ triangle with the length of the hypotenuse included without using trigonometric functions.

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

Calculating $\sin 45^\circ$ two ways gives $1/\sqrt{2}$ and $\sqrt{1/2}/1$. What went wrong?

Further simplify $\tan(\alpha+\beta)-\tan(\beta)$

Solving the trigonometric equation $2\sin(t)-1-\sin^2(t) = 0$

Finding Cartesian/symmetric form using $x,y$ and $z$

Where is inverse tangent positive?

How to graph $f(x)=(1-\cos(2x-2))/(x-1)^2$ analytically?

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