Triangle calculator SSA

Please enter two sides and a non-included angle
°


Triangle has two solutions with side c=20.63325666986 and with side c=5.21879111582

#1 Obtuse scalene triangle.

Sides: a = 13.67   b = 8.9   c = 20.63325666986

Area: T = 45.91327910333
Perimeter: p = 43.20325666986
Semiperimeter: s = 21.60112833493

Angle ∠ A = α = 30.00438408279° = 30°14″ = 0.52436658107 rad
Angle ∠ B = β = 19° = 0.33216125579 rad
Angle ∠ C = γ = 130.9966159172° = 130°59'46″ = 2.2866314285 rad

Height: ha = 6.71773066618
Height: hb = 10.31774811311
Height: hc = 4.45105166714

Median: ma = 14.34436110965
Median: mb = 16.92658191615
Median: mc = 5.15988514086

Inradius: r = 2.12554658944
Circumradius: R = 13.66884130161

Vertex coordinates: A[20.63325666986; 0] B[0; 0] C[12.92552389284; 4.45105166714]
Centroid: CG[11.1865935209; 1.48435055571]
Coordinates of the circumscribed circle: U[10.31662833493; -8.96765942383]
Coordinates of the inscribed circle: I[12.70112833493; 2.12554658944]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 149.9966159172° = 149°59'46″ = 0.52436658107 rad
∠ B' = β' = 161° = 0.33216125579 rad
∠ C' = γ' = 49.00438408279° = 49°14″ = 2.2866314285 rad




How did we calculate this triangle?

1. Use Law of Cosines


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