Calculate triangle from base and angle
Calculation of the area of a triangle, give must be the length of the base and 2 angles
This function calculates the area, perimeter, and height of an equilateral triangle. Enter the length of the base and the adjacent angles θ1 and θ2, then click the 'Calculate' button.
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Formulas for calculating a triangle
Area
\(\displaystyle A = \frac{a^2}{2} ·\frac{sin(θ_1) · sin(θ_2)}{sin(θ_1+θ_2)} \)
Height
\(\displaystyle h = a · \frac{tan(θ_1) · tan(θ_2)}{tan(θ_1) + tan(θ_2)} \)
Perimeter
\(\displaystyle P = a ·\left(1+ \frac{sin(θ_2)}{sin(θ_1 + θ_2)} + \frac{sin(θ_1)}{sin(θ_1 + θ_2)} \right)\)
Bisector of a triangle
Equilateral triangle
Right triangles
Right triangle, given 1 side and 1 angle
Isosceles right triangles
Isosceles triangles
Triangle area, given 2 sides and 1 anglee
Triangle area, given 1 side and 2 angles
Triangle, Incircle, given 3 sides
Area of a triangle given base and height
Triangle vertices, 3 x/y points
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