Analytic Trig
the function defined by sin/cos
What are the zeros of a function?
a circle with radius 1
What is the unit circle?
a value that a graph approaches but never touches, or a dotted line on a graph
What is an asymptote?
What is 5π/4?
a method for determining whether a graph is a function
What is the vertical line test?
3𝜋/2 in degrees
What is 270°?
all of the possible x-values a function can take on
What is the domain?
the basis for the Pythagorean identities
What is the Pythagorean Theorem?
a V-shaped parent function
What is the absolute value function (y = |x|) ?
the direction we travel on the unit circle for a positive angle
What is counterclockwise?
the unit vector that goes in the x-direction
What is i?
the part of the graph represented by a in the function
y=a sin x
What is the amplitude?
a type of function that includes a fraction made up of polynomials
What is a rational function?
sin is + and cos is - in this Quadrant
What is Quadrant II?
the final step in simplifying radicals, so that no radicals are in the denominator
What is "rationalizing the denominator"?
a different coordinate system given (r, θ)
What are polar coordinates?
the y-value a function approaches on either side of an x-value
What is a limit?
an angle whose sin is √ 3/2 and cos is -1/2
What is 2𝜋 /3 or 120° ?
the diagonal length of a vector
What is the magnitude of a vector?