Triangle calculator SSA

Please enter two sides and a non-included angle
°


Triangle has two solutions with side c=3.50771247279 and with side c=0.69328752721

#1 Acute scalene triangle.

Sides: a = 4.2   b = 3.9   c = 3.50771247279

Area: T = 6.37882441281
Perimeter: p = 11.60771247279
Semiperimeter: s = 5.8043562364

Angle ∠ A = α = 68.85105906375° = 68°51'2″ = 1.20216694986 rad
Angle ∠ B = β = 60° = 1.04771975512 rad
Angle ∠ C = γ = 51.14994093625° = 51°8'58″ = 0.89327256038 rad

Height: ha = 3.03772591086
Height: hb = 3.27108944247
Height: hc = 3.63773066959

Median: ma = 3.05769530465
Median: mb = 3.3421775266
Median: mc = 3.65437677862

Inradius: r = 1.09990222433
Circumradius: R = 2.25216660498

Vertex coordinates: A[3.50771247279; 0] B[0; 0] C[2.1; 3.63773066959]
Centroid: CG[1.8699041576; 1.21224355653]
Coordinates of the circumscribed circle: U[1.7543562364; 1.41224514277]
Coordinates of the inscribed circle: I[1.9043562364; 1.09990222433]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 111.1499409362° = 111°8'58″ = 1.20216694986 rad
∠ B' = β' = 120° = 1.04771975512 rad
∠ C' = γ' = 128.8510590638° = 128°51'2″ = 0.89327256038 rad




How did we calculate this triangle?

1. Use Law of Cosines


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