Question

Two circles of equal radius, one "passes over" the other: the intersection area grows and shrinks non-smoothly?

score 116 · Answer 1 · 2026-04-17 18:27:25

116

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Two circles of equal radius, one "passes over" the other: the intersection area grows and shrinks non-smoothly?

Published on 17 Apr 2026 - 18:27

score 956 · Answer 2 · 2026-04-13 03:34:42

956

Views

Geometrical proof of: $\tan{(a+b)}=\frac{\tan{a}+\tan{b}}{1-\tan{a}\tan{b}}$

Published on 13 Apr 2026 - 3:34

score 1.8k · Answer 3 · 2026-04-16 16:26:50

1.8k

Views

Find the perpendicular distance between 2 lines

Published on 16 Apr 2026 - 16:26

score 559 · Answer 4 · 2026-04-16 05:49:17

559

Views

Proving that, for an acute $\triangle ABC$, $\sin A + \sin B+\sin C\gt \cos A+\cos B+\cos C$

Published on 16 Apr 2026 - 5:49

score 148 · Answer 5 · 2026-04-17 14:54:57

148

Views

sum of the series: $\cos^3 \alpha +\cos^3 {3\alpha} + \cos^3 {5\alpha}+....+\cos^3 {(2n-1)\alpha}$.

Published on 17 Apr 2026 - 14:54

score 65 · Answer 6 · 2026-04-16 05:53:34

65

Views

What is wrong with my solution to this trigonometric equation: $\sin x - 5\cos x = 0$?

Published on 16 Apr 2026 - 5:53

score 68 · Answer 7 · 2026-04-11 13:29:00

68

Views

Ascent Up a Ramp

Published on 11 Apr 2026 - 13:29

score 46 · Answer 8 · 2026-04-11 21:15:30

46

Views

How to find the period of this function?

Published on 11 Apr 2026 - 21:15

score 110 · Answer 9 · 2026-04-08 22:50:48

110

Views

Equation to Find Local Minima of a Sinusoidal Function

Published on 08 Apr 2026 - 22:50

score 129 · Answer 10 · 2026-04-15 06:22:45

129

Views

Products of trig functions and the Thue–Morse sequence

Published on 15 Apr 2026 - 6:22

score 411 · Answer 11 · 2026-04-12 11:21:39

411

Views

Negative Power of a trigonometric function

Published on 12 Apr 2026 - 11:21

score 2.6k · Answer 12 · 2026-04-17 13:38:25

2.6k

Views

Compute without calculator, $ \frac{1}{\cos^{2}(10)} + \frac{1}{\sin^{2}(20)} + \frac{1}{\sin^{2}(40)} - \frac{1}{\cos^{2}(45)} $

Published on 17 Apr 2026 - 13:38

score 2.7k · Answer 13 · 2026-04-15 03:44:54

2.7k

Views

How to draw the graph of f(x)= [sin x] + [sin 2x]

Published on 15 Apr 2026 - 3:44

score 68 · Answer 14 · 2026-04-11 13:12:58

68

Views

Why should I consider size of revolving line always to be positive in unit circle, trigonometry?

Published on 11 Apr 2026 - 13:12

score 597 · Answer 15 · 2026-04-13 05:34:53

597

Views

Show that AQ = x cos θ + y sin θ

Published on 13 Apr 2026 - 5:34

List Question

Two circles of equal radius, one "passes over" the other: the intersection area grows and shrinks non-smoothly?

Geometrical proof of: $\tan{(a+b)}=\frac{\tan{a}+\tan{b}}{1-\tan{a}\tan{b}}$

Find the perpendicular distance between 2 lines

Proving that, for an acute $\triangle ABC$, $\sin A + \sin B+\sin C\gt \cos A+\cos B+\cos C$

sum of the series: $\cos^3 \alpha +\cos^3 {3\alpha} + \cos^3 {5\alpha}+....+\cos^3 {(2n-1)\alpha}$.

What is wrong with my solution to this trigonometric equation: $\sin x - 5\cos x = 0$?

Ascent Up a Ramp

How to find the period of this function?

Equation to Find Local Minima of a Sinusoidal Function

Products of trig functions and the Thue–Morse sequence

Negative Power of a trigonometric function

Compute without calculator, $ \frac{1}{\cos^{2}(10)} + \frac{1}{\sin^{2}(20)} + \frac{1}{\sin^{2}(40)} - \frac{1}{\cos^{2}(45)} $

How to draw the graph of f(x)= [sin x] + [sin 2x]

Why should I consider size of revolving line always to be positive in unit circle, trigonometry?

Show that AQ = x cos θ + y sin θ

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