Triangles Flashcards
1
Q
What happens with a 30-60-90 triangle?
A
Long leg is sqrt3 times the short leg
Hypotenuse is 2 times the short leg
2
Q
What happens with a 45-45-90 triangle?
A
Hypotenuse is sqrt 2 times th leg length
3
Q
Cos
A
Adjacent / Hypotenuse
4
Q
Sin
A
Opposite / Hypotenuse
5
Q
Tan
A
Opposite / Adjacent
6
Q
Law of sines
A
sinA/a sinB/b sinC/c
7
Q
Law of cosines
A
a^2 = b^2 +c^2 - 2bc * cosA
8
Q
Angle of cosines
A
CosA = b^2+c^2-a^2/2bc
