Not Given Flashcards
1
Q
Equation of a Straight Line
A
y-y₁ = m(x-x₁)
2
Q
Line Length
A
√(x₂-x₁)²+(y₂-y₁)²
3
Q
Midpoint from 2 Coords
A
(x₁+x₂)/2, (y₁+y₂)/2
4
Q
Circle Equation
A
(x-a)²+(y-b)² = r²
5
Q
Magnitude of a vector
A
|a| = √x²+y²
6
Q
cot^2 x =
A
cosec^2 x -1
7
Q
tan^2 x =
A
sec^2 x - 1
8
Q
cos2θ =
A
cos²θ-sin²θ
2cos²θ-1
1-2sin²θ
9
Q
sin2θ =
A
2sinθcosθ
10
Q
1 + tan2θ =
A
sec2θ
11
Q
cot2θ + 1 =
A
cosec2θ
12
Q
Arc length (radians)
A
length=rθ
13
Q
Area of a circle sector (radians)
A
a=1/2 x r²θ
14
Q
∫ eˣ dx =
A
eˣ + c
15
Q
∫ 1/x dx =
A
ln(x) + c
