Triangle calculator

Please enter what you know about the triangle:
Symbols definition of ABC triangle

You have entered side a, b and angle α.

Triangle has two solutions: a=125; b=150; c=28.21333475737 and a=125; b=150; c=243.6798988537.

#1 Obtuse scalene triangle.

Sides: a = 125   b = 150   c = 28.21333475737

Area: T = 894.261069321
Perimeter: p = 303.2133347574
Semiperimeter: s = 151.6076673787

Angle ∠ A = α = 25° = 0.4366332313 rad
Angle ∠ B = β = 149.5266359102° = 149°31'35″ = 2.61097272848 rad
Angle ∠ C = γ = 5.47436408984° = 5°28'25″ = 0.09655330557 rad

Height: ha = 14.30881710914
Height: hb = 11.92334759095
Height: hc = 63.39327392611

Median: ma = 87.9877195038
Median: mb = 50.84877776373
Median: mc = 137.3444463866

Inradius: r = 5.89985575692
Circumradius: R = 147.8887598947

Vertex coordinates: A[28.21333475737; 0] B[0; 0] C[-107.7332820482; 63.39327392611]
Centroid: CG[-26.50664909694; 21.1310913087]
Coordinates of the circumscribed circle: U[14.10766737868; 147.2133259175]
Coordinates of the inscribed circle: I[1.60766737868; 5.89985575692]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 155° = 0.4366332313 rad
∠ B' = β' = 30.47436408984° = 30°28'25″ = 2.61097272848 rad
∠ C' = γ' = 174.5266359102° = 174°31'35″ = 0.09655330557 rad




How did we calculate this triangle?

1. Input data entered: side a, b and angle α.


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