PRE CAL Flashcards
consists of 2 or more linear equations made up of 2 or more variables
system of equation
at least one solution
independent system
one point of intersection
independent system
same slope and same y intercept
dependent system
represents 2 parallel lines
inconsistent system
no intersection and no solution
inconsistent system
a system where one of the equations is nonlinear
nonlinear system of equations
may consist on one or more values of x and y
non linear system of equations
2 rays meet at a common end point
angle
rays forming at the angle
sides
point where the rays meet
vertex
terminal side of an angle in standard position coincides with one of the axes
quadrant angle
if 2 angles in standard position have the same terminal side
coterminal angle
positive acute angle formed between the terminal side of this angle and the x axis
reference angle
degrees in quadrants 1-4
90, 180, 270, 0-360
formula of reference angles
q1=
q2= 180 - x
q3= x - 180
q4= 360 - x
a second way to measure angles
radian measure
one radian is the measure of a central angle that intercepts arc s equal in length to the radius r of the circle
radian
2 pie corresponds to what
360 degrees
pie corresponds to what
180 degrees
2 / pie corresponds to what
90 degrees
formula of degree to radians
pie / 180
formula of radians to degree
180 / pie
meaning of trigonometric ratios
tri - 3
gono - angles
metric - measurements
ratios - relationship between 2 variables
