15 28 29 triangle

Acute scalene triangle.

Sides: a = 15   b = 28   c = 29

Area: T = 205.7577138394
Perimeter: p = 72
Semiperimeter: s = 36

Angle ∠ A = α = 30.45503140214° = 30°27'1″ = 0.53114582379 rad
Angle ∠ B = β = 71.08766450115° = 71°5'12″ = 1.24106960096 rad
Angle ∠ C = γ = 78.46330409672° = 78°27'47″ = 1.3699438406 rad

Height: ha = 27.43442851192
Height: hb = 14.69769384567
Height: hc = 14.19901474754

Median: ma = 27.5
Median: mb = 18.35875597507
Median: mc = 17.15437167984

Inradius: r = 5.71554760665
Circumradius: R = 14.79990005293

Vertex coordinates: A[29; 0] B[0; 0] C[4.86220689655; 14.19901474754]
Centroid: CG[11.28773563218; 4.73300491585]
Coordinates of the circumscribed circle: U[14.5; 2.96598001059]
Coordinates of the inscribed circle: I[8; 5.71554760665]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 149.5549685979° = 149°32'59″ = 0.53114582379 rad
∠ B' = β' = 108.9133354989° = 108°54'48″ = 1.24106960096 rad
∠ C' = γ' = 101.5376959033° = 101°32'13″ = 1.3699438406 rad

Calculate another triangle




How did we calculate this triangle?

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.


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