# Triangle calculator

Please enter what you know about the triangle:

You have entered side b, c and angle α.

### Right scalene triangle.

Sides: a = 1040.625481231   b = 350   c = 980

Area: T = 171500
Perimeter: p = 2370.625481231
Semiperimeter: s = 1185.312240616

Angle ∠ A = α = 90° = 1.57107963268 rad
Angle ∠ B = β = 19.65438240581° = 19°39'14″ = 0.34330239404 rad
Angle ∠ C = γ = 70.34661759419° = 70°20'46″ = 1.22877723864 rad

Height: ha = 329.6109669058
Height: hb = 980
Height: hc = 350

Median: ma = 520.3122406156
Median: mb = 995.5022385733
Median: mc = 602.1632768693

Inradius: r = 144.6887593844
Circumradius: R = 520.3122406156

Vertex coordinates: A[980; 0] B[0; 0] C[980; 350]
Centroid: CG[653.3333333333; 116.6676666667]
Coordinates of the circumscribed circle: U[490; 175]
Coordinates of the inscribed circle: I[835.3122406156; 144.6887593844]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90° = 1.57107963268 rad
∠ B' = β' = 160.3466175942° = 160°20'46″ = 0.34330239404 rad
∠ C' = γ' = 109.6543824058° = 109°39'14″ = 1.22877723864 rad

# How did we calculate this triangle?

### 2. Calculation of the third side a of the triangle using a Law of Cosines

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.

### 10. Calculation of medians

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See more informations about triangles or more information about solving triangles.