Pre-Calculus/Trig3
5.3 Solving Trigonometric Equations
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Review:
1. x2 4x + 3 = 0
2. x2 5x = 0
3. x =
1
+2
x
While some identities are true everywhere, others are only true at certain values. Today we are going to
find those values. Well at
Pre-Calculus/Trig3
Chapter 9: Probability
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9.6 Permutations
1. Mr. Stone has two different shirts and three different ties he could wear to the chorus concert. How
many possible combinations can Mr. Stone make?
Basic Counting Principle
If o
Pre-Calculus/Trig3
5.4 Sum and Difference Identities
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Review:
Find the exact value of the following values:
1. cos 45o =
2. cos 30o =
3. cos75o =
In order to solve for exact values of angles other than 0o,30o,45o,60o,90o,180o,270o,360o, etc
Pre-Calculus/Trig3
5.1 Trigonometric Identities
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There are three main types of trigonometric identities.
,
,
Type I: Reciprocal Identities
Sin =
Csc =
Cos =
Sec =
Tan =
Cot =
Type II: Quotient Identities
Given
Rewrite with
opp, adj, and hyp
Pre-Calculus/Trig3
9.6A Permutations Wkst
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Find each value.
1. P(10,7) =
2.
P3
=
4 P2
7
3.
P(6,4) P(5,2)
=
P (7,4)
Solve.
4. A briefcase lock has 3 rotating cylinders, each containing 10 digits. How many
numerical codes are possible?
5. A g
MAT 145 Quiz/Worksheet #5 - Trigonometric Identities
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Please show your work clearly and neatly. NO work - NO credit! Your group size may
have AT MOST 4 people. Please show your work clearly and neatly on separate paper(s).
They