Math Placement formulas EXAM PREP ALREADY PASSE

Math Placement formulas EXAM PREP
ALREADY PASSED
Quadratic Formula - =x=-b±√(b²-4ac)/2a


Extrema (of a quadratic function), x - =-b/2a


Extrema (of a quadratic function), y - =-b^2+4ac/4a


(-b/2a, - =-b^2+4ac/4a)


1 degree - =pi/180 radians


1 radian - =180/pi degrees


opposite/hypotenuse - =sin


adjacent/hypotenuse - =cos


opposite/adjacent - =tan


hypotenuse/opposite - =csc


hypotenuse/adjacent - =sec


adjacent/opposite - =cot


Pythagorean identity (sin and cos) - =sin^2(x)+cos^2(x)=1

, Pythagorean identity (tan and sec) - =1+tan^2(x)=sec^2(x)


Pythagorean identity (cot and csc) - =cot^2(x)+1=csc^2(x)


1/sin(x) - =csc(x)


1/cos(x) - =sec(x)


1/tan(x) - =cot(x)


sin(x)/cos(x) - =tan(x)


cos(x)/sin(x) - =cot(x)


sin(-x) - =-sin(x)


cos(-x) - =cos(x)


tan(-x) - =-tan(x)


sin(pi/2 - x) - =cos(x)


cos(pi/2 - x) - =sin(x)


tan(pi/2 - x) - =cot(x)


cot(pi/2 - x) - =tan(x)