Notes for Trigonometry
Trig Functions:
Sine
Cosine
Tangent
All Trig functions are used for right triangles only. Each one is a proportion and when working
the problem should be cross multiplied and solved.
Sine x =
length leg opposite of angle
length of h

The Pythagorean theorem: The sum of the areas
of the two squares on the legs (a and b) equals
the area of the squared on the hypotenuse (c).
The hypotenuse (c) the side opposite
the right angle.
c
b
b
2
The theorem can
be written as an
equation:
=
a
Ar
ea

What is a Function?
A function has an input
and an output,
and the output is
related (the function)
to the input
Relationship
Independent Variable
Output
Dependent Variable
X
Rule
0
2(0)+3
3
1
2(1)+3
5
4
2(4)+3
11
n
2(n)+3
Y
2x+3
Y
Classic description
f(x

Order of Operations (Ooops)
PEMDAS
Parenthesis and Exponents
First Level
Multiplication and Division
Second Level
Addition and Subtraction
Third Level
Parenthesis first, Exponents
Evaluate Left to Right
Evaluate Left to Right
6 x (5 + 3) =
6 x (8) =
48
5

Name: _ Class: _ Date: _
Polynomials/Slope Intercept TEST REVIEW
Multiple Choice
Identify the choice that best completes the statement or answers the question.
Combine like terms.
_
2
2
1. (7y 3y) (8y 8y)
d.
y 2 5y
8y 6d
d.
10y 4d
c.
b 10
d.
30b 2 50b
c.

Name: _
Unit 11: Volume & Surface Area
Date: _ Bell: _
Homework 9: Volume & Surface Area Review
* This is a 2-page document! *
Directions: Find the volume of each figure. Round to the nearest hundredth when necessary.
1.
2.
3.5 yd
13 m
10 yd
8m
21 m
3.
4.

Name_Date_Per_
Test #4 Circles Review
1. Find the measure of
.
The figure is not drawn to scale.
A
E
27
D
103
50
B
35
O
C
2. Find the length of
. Leave your answer in terms of
.
X
12 m
Y
P
3. Find the area of a sector with a central angle of 140 and a di

Geometry
Guided Notes
Area and Perimeter
Perimeter
Name: _
Date: _ Period: _
perimeter - the sum of the _ of the _ of a polygon (perimeter is a linear
measurement).
Example #1: Find the perimeter.
Example #2: Find the perimeter.
Example #3: Find the perim

Rational Numbers
is a number that can be expressed
as the ratio of two integers
3:5
1
2
2 to 17
2
1 = .3
5
3
1
.125 =
8
63
128
This means any fraction or
mixed number and any
decimal that terminates
or repeats