Triangle calculator

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

You have entered side b, c and angle α.

Obtuse scalene triangle.

Sides: a = 12.07989388927   b = 11.5   c = 0.8

Area: T = 3.25326911935
Perimeter: p = 24.37989388927
Semiperimeter: s = 12.18994694464

Angle ∠ A = α = 135° = 2.35661944902 rad
Angle ∠ B = β = 42.31657205937° = 42°18'57″ = 0.73985486497 rad
Angle ∠ C = γ = 2.68442794063° = 2°41'3″ = 0.04768495137 rad

Height: ha = 0.53985723402
Height: hb = 0.56656854249
Height: hc = 8.13217279836

Median: ma = 5.4744468815
Median: mb = 6.34109685685
Median: mc = 11.78662369901

Inradius: r = 0.26768443617
Circumradius: R = 8.54110996006

Vertex coordinates: A[0.8; 0] B[0; 0] C[8.93217279836; 8.13217279836]
Centroid: CG[3.24439093279; 2.71105759945]
Coordinates of the circumscribed circle: U[0.4; 8.53217279836]
Coordinates of the inscribed circle: I[0.68994694464; 0.26768443617]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 45° = 2.35661944902 rad
∠ B' = β' = 137.6844279406° = 137°41'3″ = 0.73985486497 rad
∠ C' = γ' = 177.3165720594° = 177°18'57″ = 0.04768495137 rad

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How did we calculate this triangle?

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


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