Ratios of sine, cosine, and tangent
What is
sin = (opposite)/(hypoten use) , c o s i n e = (adjacent)/(hypoten use) , tangent = (opposite)/(adjacent)
Period, phase shift, and amplitude of
f(x) = -4sin(4(x-pi/2))+7
What is
period = pi/2, phase shift = pi/2 to, amplitude = 4
Find the length and slope of the segment that connects (7,3) and (13, 7).
What is
l=sqrt(52) , m=3/2
Apply the Rational Root Theorem
P(x) = 7x^17+sqrt5x^6-x^3+4x^2-8x+6
What is
±1/1,±1/7, ±2/1. ±2/7, ±3/1, ±3/7, ±6/1,±6/7
Two key points of
h(x)=e^x
What is (0,1) & (1, e)
If
sin=3/8, tan= 3/6
, what is cosine?
What is
cos = 6/8
Find the radius of a circle if a central angle of 20° intersects an arc of length
pi/2 units
What is r = 4.5
Find the x-intercept, y-intercept, and slope:
8x - 6y = 24
What is
x: (3,0), y: (0,-4), m=4/3
If P(x) is a polynomial with zeros at
x=2, x=-sqrt(15), x=4+2i
, what is its minimal degree and what other zeros do we know about?
What is
D=5, x=sqrt(15), x=4-2i
Amount on deposit after 100 years if $2,000 is invested at 5% interest compounded quarterly and no other deposits are made.
What is
2,000xx(1+.05/4)^(4xx100), $287,768.17
Find
bar (BC)
What is
approx 5
Find c
What is
c approx 6.7
Equation of the line through (2, 3) and perpendicular to 2x + y = 10
What is
y-3=1/2(x-2)
Degree, Leading Coefficient, constant, and end behavior of
f(x) = -2(x-2)(x+1)(x+2)(x-1)
What is
D=4, LC=-2, C=-8, Tails: l=downarrow, r=downarrow
Find f(-3) and f(30) if
What is
f(-3) = -7
f(30) = 9
Find
angle A
What is
angleAapprox53.1°
Find b
What is
bapprox9.8
Factored Form and zeros of
y=x^2+5x-14
What is
y=(x-2)(x+7), x=2,-7
Zeros of
P(x)=(x-2)^5(x+8)^6
and behavior at those zeros
What is
x=2 rightarrowcrosses, x=-8rightarrowt ouches&turns
Evaluate for x = -3.25 if
f(x) = abs(x-2)+3
g(x) = [x]
What is
f(-3) = 8.25
g(-3) = -4
From the top of a 180ft cliff, the angle of depression to the base of a lighthouse is 22°. How far is the lighthouse from the base of the cliff?
What is
approx 445.5ft
Find
theta
if the angle is in standard position and the terminal ray passes through (-7, -9).
What is
theta approx 232.1°
Vertex Form, Vertex, and Classification of Maximum/Minimum of
4x^2-16x+18
What is
y=4(x-2)^2+2, Mi n: (2, 2)
Divide
3x^3-4x^2+5x-7
by
x^2-2
What is 3x-4 R11x-15
Graph:
f(theta) = 3sin(theta -pi/2)
What is