8.3 8.1 0.75 triangle

Obtuse scalene triangle.

Sides: a = 8.3   b = 8.1   c = 0.75

Area: T = 2.96105499252
Perimeter: p = 17.15
Semiperimeter: s = 8.575

Angle ∠ A = α = 102.9244243841° = 102°55'27″ = 1.79663669351 rad
Angle ∠ B = β = 72.02330393212° = 72°1'23″ = 1.25770391734 rad
Angle ∠ C = γ = 5.0532716838° = 5°3'10″ = 0.0888186545 rad

Height: ha = 0.71333855241
Height: hb = 0.73109999815
Height: hc = 7.89547998004

Median: ma = 3.98329323369
Median: mb = 4.28106249544
Median: mc = 8.19220311889

Inradius: r = 0.34552536356
Circumradius: R = 4.25878660447

Vertex coordinates: A[0.75; 0] B[0; 0] C[2.56216666667; 7.89547998004]
Centroid: CG[1.10438888889; 2.63215999335]
Coordinates of the circumscribed circle: U[0.375; 4.24113203433]
Coordinates of the inscribed circle: I[0.475; 0.34552536356]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 77.07657561592° = 77°4'33″ = 1.79663669351 rad
∠ B' = β' = 107.9776960679° = 107°58'37″ = 1.25770391734 rad
∠ C' = γ' = 174.9477283162° = 174°56'50″ = 0.0888186545 rad

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. 1. The triangle circumference is the sum of the lengths of its three sides 2. Semiperimeter of the triangle 3. The triangle area using Heron's formula 4. Calculate the heights of the triangle from its area. 5. Calculation of the inner angles of the triangle using a Law of Cosines     