3 15 17 triangle

Obtuse scalene triangle.

Sides: a = 3   b = 15   c = 17

Area: T = 17.8109758561
Perimeter: p = 35
Semiperimeter: s = 17.5

Angle ∠ A = α = 8.03295831464° = 8°1'46″ = 0.14401426635 rad
Angle ∠ B = β = 44.30105298893° = 44°18'2″ = 0.77331901069 rad
Angle ∠ C = γ = 127.6769886964° = 127°40'12″ = 2.22882598832 rad

Height: ha = 11.8733172374
Height: hb = 2.37546344748
Height: hc = 2.09552657131

Median: ma = 15.96108896995
Median: mb = 9.63106801421
Median: mc = 6.69895440801

Inradius: r = 1.01877004892
Circumradius: R = 10.73884948171

Vertex coordinates: A[17; 0] B[0; 0] C[2.14770588235; 2.09552657131]
Centroid: CG[6.38223529412; 0.69884219044]
Coordinates of the circumscribed circle: U[8.5; -6.56224134993]
Coordinates of the inscribed circle: I[2.5; 1.01877004892]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 171.9770416854° = 171°58'14″ = 0.14401426635 rad
∠ B' = β' = 135.6999470111° = 135°41'58″ = 0.77331901069 rad
∠ C' = γ' = 52.33301130357° = 52°19'48″ = 2.22882598832 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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