Mathematics
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ACB
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I am still interested in this problem: Alternative cartesian equation for epicycloid (quatrefoil). There ought to be a nice equation.

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All Questions Answers
Score Newest
answer
11
What's the other case for finding the missing side of this triangle?
Jan 12, 2022
answer
8
What is the sum of the angles a+b+c?
Aug 31, 2021
answer
6
Remarkable property of equilateral triangles
Apr 6
answer
6
How do you derive that the inradius in a right triangle is $r=\frac{a+b-c}2$?
Oct 19, 2021
answer
6
Property of a kite inscribed in a square
Sep 11, 2021
answer
6
How do you write $\sin(2x)$ in terms of $\tan x$?
Dec 11, 2021
answer
5
Find area of Pentagram : Regular Pentagon if $AP : PQ = m:1$
Sep 20, 2021
answer
5
Square in a quadrant of a circle (Doubt in a solution given)
Dec 25, 2021
answer
4
Find the area of pentagon $PQRST$.
Apr 4
answer
4
Eliminate $\theta$ from $4x=5\cos\theta -\cos 5\theta$ and $4y=5\sin\theta -\sin 5\theta$
Oct 29, 2021
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Answer pretends to be accepted but actually not.
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List of earned bounties shows the state of question, not the answer.
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A Weapon or a Toy?
62
2 vs. 1.005^200
32
9 digits in vertical arrangement
32
What fraction is shaded?
24
Why is the time of flight of a projectile on an inclined plane equal to twice the time taken to reach maximum distance normal to incline?

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