factorising quadratics Flashcards
1
Q
co internrior angles ?
A
co interior angles add up to 180 degrees
1
Q
area for a trapezium formula
A
half (a+b) x height
2
Q
corresponding angles?
A
corresponding angles are equal
3
Q
alternate angles?
A
alternate angles are equal
4
Q
vertically opposite angles?
A
vertically opposite angles are equal
5
Q
percentage change formula?
A
percentage change= change/original x 100
6
Q
pythagoras?
A
a(2) + b(2)= c(2)
7
Q
SOH CAH TOA in inverse?
A
sin cos tan but in (-1), shift button on calculator.
8
Q
root2 x root2=
A
root 2
9
Q
area of a circle
A
PIEr(2)
10
Q
circumference of a circle
A
2PIEr/ PIE x D
11
Q
which it is the diameter of a circle
-how to calculate it
A
across the middle
-D = 2r
R = radius
12
Q
how to solve inverse functions
A
1- make X equal to Y
2- swap X and Y
3- solve for Y
4- replace Y with the function you have
13
Q
A
