Equations Flashcards
1
Q
What is the equation for the gradient of a line?
A
m= Y2 - Y1/X2 - X1
2
Q
Equation for the distance between 2 points
A
d=√((x2 – x1)² + (y2 – y1)²)
3
Q
Coordinates of a mid point
A
(x₁ + x₂)/2, (y₁ + y₂)/2
4
Q
Equation of a circle
A
( x - a )^2 + ( y - b )^2 = r^2
5
Q
Sine rule
A
a/sinA = b/sinB = c/sinC
6
Q
Cosine rule
A
a^2= b^2+ c^2 - 2bc X Cos(A)
