Math Forum: Ask Dr. Math FAQ: Trigonometry Formulas
[Back to Contents] Relations in Oblique Triangles A + B + C = , s = (a+b+c)/2, half the perimeter, r = radius of inscribed circle, R = radius of circumscribed circle, K = area. The Law of Sines: a/sin(A) = b/sin(B) = c/sin(C) = 2R. This implies that a...