Precal Stuff Flashcards
Sin(0)
0
Sin(Pi/6)
1/2
Sin(Pi/4)
Square root of 2/2
sin(Pi/3)
Square root of 3/2
sin(Pi/2)
1
sin(pi)
0
sin(3pi/2)
-1
sin(2pi)
0
cos(0)
1
cos(pi/6)
Square root of 3/2
cos(pi/4)
Square root of 2/2
cos(pi/3)
1/2
cos(pi/2)
0
cos(pi)
-1
cos(3pi/2)
0
cos(2pi)
1
tan (theta)
sin/cos
cot (theta)
cos/sin
sec (theta)
1/cos
Wavy line on graph starting at the origin (0,0)
y = sin(x)
Wavy line on graph starting at (0,1)
y = cos(x)
Multiple y = x^3 functions on the graph
y = tan(x)
Multiple y = x^2 functions curving at y = 1 and y = -1
y = sec(x)
Graph with asymptotes at the origin
y = 1/x
Function curving and exponentially growing horizontally
y = square root of x
Perfect semicircle function on the graph
y = square root of 1 - x^2
Function with lines in a V-shape coming to the origin (0,0)
y = |x|
Function that never touches the y-line and curves horizontally
y = ln x
Function that never touches the x-line and curves vertically
y = e^x
An even function is…
Symmetric with respect to the y-axis like y = x^2
An odd function is…
Symmetric with respect to the origin, like y = x^3
Area of a triangle
A = 1/2(bh)
Area of a circle
A = pi * radius^2
Circumference of a circle
C = 2(pi)r
Volume of a cylinder
V = pi * radius^2 * height
Volume of a cone
V = 1/3 (pi * radius^2 * height)
Volume of a sphere
V = 4/3 (pi * radius^3)
Surface Area of a Sphere
A = 4(pi * radius^2)
Point Slope Form
y - y1 = m(x - x1)
