Question

what is the maximum/minimum value of f(x)= ab $ \sin x + b \sqrt(1-a^2)\cos x + c$

score 290 · Answer 1 · 2026-04-16 11:12:46

290

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what is the maximum/minimum value of f(x)= ab $ \sin x + b \sqrt(1-a^2)\cos x + c$

Published on 16 Apr 2026 - 11:12

score 111 · Answer 2 · 2026-04-13 00:55:24

111

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Definite integrals: calculating exact value of $\operatorname{arcsinh}$

Published on 13 Apr 2026 - 0:55

score 2.4k · Answer 3 · 2026-04-11 10:59:12

2.4k

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Fourier series of $\cos^4(x)$

Published on 11 Apr 2026 - 10:59

score 61 · Answer 4 · 2026-04-17 08:00:00

61

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Solving $\tan (2x) = 6\cos^2(x) - 4\sin(x)\cos(x) - 2\sin^2(x)$

Published on 17 Apr 2026 - 8:00

score 598 · Answer 5 · 2026-04-14 00:39:57

598

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Proving trigonometric cofunction identities for angles larger than $\pi / 2$

Published on 14 Apr 2026 - 0:39

score 1.4k · Answer 6 · 2026-04-16 14:09:35

1.4k

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Showing that $\arcsin x + \arccos y = \frac{\pi}{2}$ if and only if $x = y$

Published on 16 Apr 2026 - 14:09

score 237 · Answer 7 · 2026-04-14 15:02:46

237

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Why does $\cos(\pi/2-(\pi/2-x)) = \cos(x)$?

Published on 14 Apr 2026 - 15:02

score 56 · Answer 8 · 2026-04-16 01:06:10

56

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Solving $\sin (x )^{\sin(2x) - \cos(2x)} = 1$ where $0^{\circ}<x<360^{\circ}$.

Published on 16 Apr 2026 - 1:06

score 509 · Answer 9 · 2026-04-10 06:38:56

509

Views

definition of $\pi$ in terms of $\cos$

Published on 10 Apr 2026 - 6:38

score 996 · Answer 10 · 2026-04-15 15:02:24

996

Views

Find Third point in right triangle given two points and a length

Published on 15 Apr 2026 - 15:02

score 87 · Answer 11 · 2026-04-14 09:38:46

87

Views

Isosceles triangles and deltoids.

Published on 14 Apr 2026 - 9:38

score 78 · Answer 12 · 2026-04-15 09:17:16

78

Views

Problems in solving $\cos^{2}z=-1$

Published on 15 Apr 2026 - 9:17

score 87 · Answer 13 · 2026-04-16 16:18:51

Proving $\cos^{2}\frac{\pi}{2n} \cos^{2}\frac{3\pi}{2n}\cdots \cos^{2}\frac{\left(n-2\right)\pi}{2n}=n2^{1-n}$ using complex numbers

score 57 · Answer 14 · 2026-04-16 07:31:45

57

Views

Area of Parallelogram in $\mathbb R^n$

Published on 16 Apr 2026 - 7:31

score 166 · Answer 15 · 2026-04-18 18:30:55

166

Views

Given $\cos 3\theta = 4(\cos\theta)^3 - 3\cos\theta$, solve $4x^3 - 9x - 1 = 0$, correct to 3 decimal places.

Published on 18 Apr 2026 - 18:30

List Question

what is the maximum/minimum value of f(x)= ab $ \sin x + b \sqrt(1-a^2)\cos x + c$

Definite integrals: calculating exact value of $\operatorname{arcsinh}$

Fourier series of $\cos^4(x)$

Solving $\tan (2x) = 6\cos^2(x) - 4\sin(x)\cos(x) - 2\sin^2(x)$

Proving trigonometric cofunction identities for angles larger than $\pi / 2$

Showing that $\arcsin x + \arccos y = \frac{\pi}{2}$ if and only if $x = y$

Why does $\cos(\pi/2-(\pi/2-x)) = \cos(x)$?

Solving $\sin (x )^{\sin(2x) - \cos(2x)} = 1$ where $0^{\circ}<x<360^{\circ}$.

definition of $\pi$ in terms of $\cos$

Find Third point in right triangle given two points and a length

Isosceles triangles and deltoids.

Problems in solving $\cos^{2}z=-1$

Proving $\cos^{2}\frac{\pi}{2n} \cos^{2}\frac{3\pi}{2n}\cdots \cos^{2}\frac{\left(n-2\right)\pi}{2n}=n2^{1-n}$ using complex numbers

Area of Parallelogram in $\mathbb R^n$

Given $\cos 3\theta = 4(\cos\theta)^3 - 3\cos\theta$, solve $4x^3 - 9x - 1 = 0$, correct to 3 decimal places.

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