Public Formula Library

TRIANGLE

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Formula name

TRIANGLE

Description

general principles

Syntax

a = b * SIN(α) / SIN(β)
R = a / (2 * SIN(α))
c = SQRT( a^2 + b^2 - 2*a*b*COS([π] - α - β))
A = 1/2 * b * c * SIN(α)
s = 1/2 * (a + b + c)
ri = A / s

Notes

"R" means the radius of the circumscribed circle of the triangle and "A" means the area of the triangle.
" ri " stands for the radius of the inner circle of the triangle.
"s" means half of the perimeter of the triangle.

Category / Subcategory

Mathematics / Trigonometry

Creator

Physics@abacal.com

Account

Free

Tags

formula triangle

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