Math Placement Test Equations Questions and Answers

Math Placement Test Equations
Questions and Answers
Distance Formula - Answer -d=√(x₂-x₁)²+(y₂-y₁)²

Quadratic Equation - Answer -ax²+bx+c=0

Quadratic Formula - Answer -x=-b±√b²-4ac/2a

Discriminant - Answer -b²-4ac=0 has 1 real solution b²-4ac>0 has 2

Avg Rate of Change for a Function - Answer -∆f(x)/∆x

lne = - Answer -0

Inverse Function - Answer -xlogx=xyx

2π - Answer -360

Angle Measure - Answer -x/y=360/2π

sinθ (Def of Circular Function) - Answer -y/r

cosθ (Def of Circular Function) - Answer -x/r

tanθ (Def of Circular Function) - Answer -y/x

What is the period of f(x)=sin(x) - Answer -period 2π

What is the period of f(x)=cos(x) - Answer -period 2π

What is the period of f(x)=tan(x) - Answer -π

Double Angle Formulas sin(2u) - Answer -sin(2u)=2sin(u)cos(u)

Double Angle Formulas cos(2u) - Answer -cos²(u)-sin(u)=1-2sin²(u)=2cos²(u)-1

Law of Sines - Answer -sinA/a = sinB/b = sinC/c