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Emmanuel José García's user avatar
Emmanuel José García's user avatar
Emmanuel José García's user avatar
Emmanuel José García
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The half-angle formulas are central!

Context: The theoretical importance of half-angle formulas

And as a picture is worth a thousand words...

The arrows indicate that the identity at the tail of the arrow implies the identity at the head of the arrow.

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The generalized Lami's theorem
Jul 11, 2022
1
Equilibrium problem with 3 unknown forces | Hanging mass
Jul 16, 2022
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The theoretical importance of the half-angle formulas
11
Trigonometric formula for solving quadratic equations
10
Generalization of the law of tangents for a cyclic quadrilateral
9
A generalization of the law of tangents
9
Solving 'impossible' integrals with a new (?) trick