# Triangle calculator SSA

Please enter two sides and a non-included angle
°

### Obtuse scalene triangle.

Sides: a = 0.6133248   b = 20.9165512   c = 20.895509981

Area: T = 6.4065827473
Perimeter: p = 42.424385981
Semiperimeter: s = 21.2121929905

Angle ∠ A = α = 1.68798756654° = 1°40'48″ = 0.02993193614 rad
Angle ∠ B = β = 91.0677321° = 91°4'2″ = 1.58994245924 rad
Angle ∠ C = γ = 87.25328033346° = 87°15'10″ = 1.52328486998 rad

Height: ha = 20.89114744867
Height: hb = 0.61325432141
Height: hc = 0.61331416008

Median: ma = 20.90330596054
Median: mb = 10.44663378288
Median: mc = 10.47769298293

Inradius: r = 0.3021991733
Circumradius: R = 10.46595707473

Vertex coordinates: A[20.895509981; 0] B[0; 0] C[-0.0111423086; 0.61331416008]
Centroid: CG[6.96112255747; 0.20443805336]
Coordinates of the circumscribed circle: U[10.4487549905; 0.50113194585]
Coordinates of the inscribed circle: I[0.2966417905; 0.3021991733]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 178.3220124335° = 178°19'12″ = 0.02993193614 rad
∠ B' = β' = 88.9332679° = 88°55'58″ = 1.58994245924 rad
∠ C' = γ' = 92.74771966654° = 92°44'50″ = 1.52328486998 rad

# How did we calculate this triangle?

### 1. Use 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. ### 2. The triangle circumference is the sum of the lengths of its three sides ### 3. Semiperimeter of the triangle ### 4. The triangle area using Heron's formula ### 5. Calculate the heights of the triangle from its area. ### 6. Calculation of the inner angles of the triangle using a Law of Cosines ### 7. Inradius ### 8. Circumradius ### 9. Calculation of medians #### Look also our friend's collection of math examples and problems:

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