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Section 7.1 Solving Trigonometric Equations and Identities 409
Chapter 7: Trigonometric Equations and Identities
In the last two chapters we have used basic definitions and relationships to simplify
trigonometric expressions and solve trigonometric equati
Chapter 6: Periodic Functions
In the previous chapter, the trigonometric functions were introduced as ratios of sides of a
right triangle, and related to points on a circle. We noticed how the x and y values of the
points did not change with repeated revo
Last edited 11/13/14
7.1 Solutions to Exercises
1
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3. Dividing both sides by 2, cos = 2. Using our
Last edited 3/21/13
6.1 Solutions to Exercises
1. There is a vertical stretch with a factor of 3, and a horizontal reflection.
3. There is a vertical stretch with a factor of 2.
5. Period: 2. Amplitude: 3. Midline: = 4.
The function is a sine function, be
Solution to Last Weeks Advanced Problem:
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Chapter 5: Trigonometric Functions of Angles
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Last edited 12/4/14
8.1 Solutions to Exercises
1. Since the sum of all angles in a triangle is 180, 180 = 70
+ 50 + . Thus = 60.
The easiest way to find A and B is to use Law of Sines.
According to Law of Sines,
B
10
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sin( ) sin( ) sin( )
, where
a
b