Question

If $\sin(x)+\sin(y)\ge \cos(\alpha) \times \cos(x)$ $\forall x\in \mathbb R$, then $\sin(y)+\cos(\alpha)$ is equal to?

score 64 · Answer 1 · 2026-04-15 19:50:21

64

Views

If $\sin(x)+\sin(y)\ge \cos(\alpha) \times \cos(x)$ $\forall x\in \mathbb R$, then $\sin(y)+\cos(\alpha)$ is equal to?

Published on 15 Apr 2026 - 19:50

score 50 · Answer 2 · 2026-04-17 14:31:16

50

Views

Problem of complex equations and Cauchy-Riemann

Published on 17 Apr 2026 - 14:31

score 3.2k · Answer 3 · 2026-04-08 08:01:19

3.2k

Views

Parametrization of a line segment using angle as parameter

Published on 08 Apr 2026 - 8:01

score 315 · Answer 4 · 2026-04-11 18:42:23

315

Views

Trig Identity Question Finding Value of K

Published on 11 Apr 2026 - 18:42

score 100 · Answer 5 · 2026-04-14 18:50:13

100

Views

Find a point on a circle which contains a rectangle using another point, the angle between the two and the rectangle's dimensions

Published on 14 Apr 2026 - 18:50

score 204 · Answer 6 · 2026-03-25 23:13:08

204

Views

Calculating $\lim_{n\to\infty}\left(\frac{\sin(2\sqrt 1)}{n\sqrt 1\cos\sqrt 1} +\cdots+\frac{\sin(2\sqrt n)}{n\sqrt n\cos\sqrt n}\right)$

Published on 25 Mar 2026 - 23:13

score 128 · Answer 7 · 2026-04-15 12:15:32

Simplifying $\sin\frac{11\pi}{12}\sin\frac{29\pi}{12}-\cos\frac{13\pi}{12}\cos\frac{41\pi}{12}$. Why do I get the wrong answer?

score 550 · Answer 8 · 2026-04-13 22:14:53

550

Views

Exponential decrease of amplitude with time

Published on 13 Apr 2026 - 22:14

score 188 · Answer 9 · 2026-04-13 15:28:53

188

Views

Minimum value of $y=\sin( 2x) - x$, where $x\in [-\frac{\pi}2,\frac{\pi}2]$

Published on 13 Apr 2026 - 15:28

score 59 · Answer 10 · 2026-04-09 17:00:40

59

Views

Water levels during global warming

Published on 09 Apr 2026 - 17:00

score 30 · Answer 11 · 2026-04-16 12:21:41

30

Views

Clarification for inverse trigonometric fuctions.

Published on 16 Apr 2026 - 12:21

score 37 · Answer 12 · 2026-04-11 05:25:30

37

Views

Finding a third point of a triangle in 3D

Published on 11 Apr 2026 - 5:25

score 34 · Answer 13 · 2026-04-10 18:28:04

34

Views

Solving a system of Trignometric equations

Published on 10 Apr 2026 - 18:28

score 193 · Answer 14 · 2026-04-12 13:18:50

193

Views

Proving$\frac{(\sec{v}-\tan{v})^2+1}{\csc{v}(\sec{v}-\tan{v})}=2\tan{v}$

Published on 12 Apr 2026 - 13:18

score 99 · Answer 15 · 2026-04-13 04:37:42

99

Views

How do I integrate $4\int_0^{\pi/2}\frac{\sec^2(\theta)}{1+2\tan^2(\theta)}\,d\theta$ using symmetry?

Published on 13 Apr 2026 - 4:37

List Question

If $\sin(x)+\sin(y)\ge \cos(\alpha) \times \cos(x)$ $\forall x\in \mathbb R$, then $\sin(y)+\cos(\alpha)$ is equal to?

Problem of complex equations and Cauchy-Riemann

Parametrization of a line segment using angle as parameter

Trig Identity Question Finding Value of K

Find a point on a circle which contains a rectangle using another point, the angle between the two and the rectangle's dimensions

Calculating $\lim_{n\to\infty}\left(\frac{\sin(2\sqrt 1)}{n\sqrt 1\cos\sqrt 1} +\cdots+\frac{\sin(2\sqrt n)}{n\sqrt n\cos\sqrt n}\right)$

Simplifying $\sin\frac{11\pi}{12}\sin\frac{29\pi}{12}-\cos\frac{13\pi}{12}\cos\frac{41\pi}{12}$. Why do I get the wrong answer?

Exponential decrease of amplitude with time

Minimum value of $y=\sin( 2x) - x$, where $x\in [-\frac{\pi}2,\frac{\pi}2]$

Water levels during global warming

Clarification for inverse trigonometric fuctions.

Finding a third point of a triangle in 3D

Solving a system of Trignometric equations

Proving$\frac{(\sec{v}-\tan{v})^2+1}{\csc{v}(\sec{v}-\tan{v})}=2\tan{v}$

How do I integrate $4\int_0^{\pi/2}\frac{\sec^2(\theta)}{1+2\tan^2(\theta)}\,d\theta$ using symmetry?

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