Question

I need help converting $x^2 + y^2 = -4y$ into a polar equation

score 1.5k · Answer 1 · 2026-04-14 08:42:13

1.5k

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I need help converting $x^2 + y^2 = -4y$ into a polar equation

Published on 14 Apr 2026 - 8:42

score 76 · Answer 2 · 2026-04-11 06:17:28

76

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Inequality for $\frac{\sin x}{\sin y}$

Published on 11 Apr 2026 - 6:17

score 73 · Answer 3 · 2026-04-16 04:14:01

Show that ${\sin^4x\over a}+{\cos^4x\over b}={1\over a+b} \implies {\sin^6x\over a^2}+{\cos^6x\over b^2}={1\over (a+b)^2}$

score 125 · Answer 4 · 2026-04-15 12:53:55

125

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Complex argument and nyquist plot

Published on 15 Apr 2026 - 12:53

score 4.8k · Answer 5 · 2026-04-15 08:29:06

4.8k

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Find the value of: sin(100) + sin(125) + sin(100)•sin(125)

Published on 15 Apr 2026 - 8:29

score 2.5k · Answer 6 · 2026-04-16 22:56:29

2.5k

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Find the value of: tan(100) + tan(125) + tan(100)•tan(125)

Published on 16 Apr 2026 - 22:56

score 171 · Answer 7 · 2026-04-14 21:36:52

171

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Solve $\arccos x\cdot\arcsin x={\pi^2\over 18}$

Published on 14 Apr 2026 - 21:36

score 69 · Answer 8 · 2026-04-14 02:51:13

69

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$\cos(2\arccos(\frac{a}{a+1})x$

Published on 14 Apr 2026 - 2:51

score 3.7k · Answer 9 · 2026-04-14 16:39:32

3.7k

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Value of $ \cos 52^{\circ} + \cos 68^{\circ} + \cos 172^{\circ} $?

Published on 14 Apr 2026 - 16:39

score 692 · Answer 10 · 2026-04-17 04:24:30

Compute the value of $(\arctan \frac{1}{2}+\arctan \frac{1}{3})/(\operatorname{arccot} \frac{1}{2}+\operatorname{arccot} \frac{1}{3}) $

score 176 · Answer 11 · 2026-05-11 01:47:50

176

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Proving a tough geometrical inequality, with equality in equilateral triangles.

Published on 11 May 2026 - 1:47

score 663 · Answer 12 · 2026-04-15 15:15:42

663

Views

Halving a tiny angle by doubling a side of a triangle.

Published on 15 Apr 2026 - 15:15

score 4.4k · Answer 13 · 2026-04-15 16:34:53

4.4k

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Prove that $\tan55^\circ\cdot\tan65^\circ\cdot\tan75^\circ=\tan85^\circ$

Published on 15 Apr 2026 - 16:34

score 73 · Answer 14 · 2026-04-13 09:44:17

73

Views

calculate the angles of a triangle?

Published on 13 Apr 2026 - 9:44

score 798 · Answer 15 · 2026-04-16 16:45:35

798

Views

How would i Find cos(theta) if the terminal side goes through the point $(-1/3,1/2)$?

Published on 16 Apr 2026 - 16:45

List Question

I need help converting $x^2 + y^2 = -4y$ into a polar equation

Inequality for $\frac{\sin x}{\sin y}$

Show that ${\sin^4x\over a}+{\cos^4x\over b}={1\over a+b} \implies {\sin^6x\over a^2}+{\cos^6x\over b^2}={1\over (a+b)^2}$

Complex argument and nyquist plot

Find the value of: sin(100) + sin(125) + sin(100)•sin(125)

Find the value of: tan(100) + tan(125) + tan(100)•tan(125)

Solve $\arccos x\cdot\arcsin x={\pi^2\over 18}$

$\cos(2\arccos(\frac{a}{a+1})x$

Value of $ \cos 52^{\circ} + \cos 68^{\circ} + \cos 172^{\circ} $?

Compute the value of $(\arctan \frac{1}{2}+\arctan \frac{1}{3})/(\operatorname{arccot} \frac{1}{2}+\operatorname{arccot} \frac{1}{3}) $

Proving a tough geometrical inequality, with equality in equilateral triangles.

Halving a tiny angle by doubling a side of a triangle.

Prove that $\tan55^\circ\cdot\tan65^\circ\cdot\tan75^\circ=\tan85^\circ$

calculate the angles of a triangle?

How would i Find cos(theta) if the terminal side goes through the point $(-1/3,1/2)$?

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