Trigonometric Ratio Equations Flashcards
1
Q
Equation for a missing sidelength when you know the 2 other sidelengths and an angle
A
A^2 = b^2 + c^2 - 2bcCosA
2
Q
Equation for an angle when you know the 3 sidelengths
A
CosA = (b^2 + c^2 - a^2) / 2bc
3
Q
Equation for finding a length when you know 2 angles and a sidelength
A
a / sinA = b / sinB
4
Q
Equation for finding an angle when you know two sidelengths and an angle
A
sinA / a = sinB / b
5
Q
Equation for area of triangle
A
Area = 1/2 abSinC
