7'1 Day 1

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7.1 Day 1
Section 7.1 Right Triangle Trigonometry
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OBJECTIVE 1
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Find the value of each of the six trigonometric
functions of the angle ?.
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Find the value of each of the six trigonometric
functions of the angle ?.
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Find the value of each of the six trigonometric
functions of the angle ?.
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OBJECTIVE 2
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Find the exact value of each expression. Do not
use a calculator.
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Find the exact value of each expression. Do not
use a calculator.
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OBJECTIVE 3
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Solving a right triangle means that you find all
the missing parts
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Use the right triangle shown and the given
information to solve the triangle
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Use the right triangle shown and the given
information to solve the triangle
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HW 7.1a Pg 527-528 9-41
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7.1 Day 2
Section 7.1 Right Triangle Trigonometry
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OBJECTIVE 4
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OBJECTIVE 4
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A plane is flying at 170 mph with heading N 52.5
E. The wind current are at a constant 35 mph at
N 142.5 E. Find the ground speed and true
course of the plane..
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A boat travels 72 miles on a course with
direction N 27 E and then changes its course to
travel 37 miles at N 55 E. How far north and
how far east has the boat traveled on this 109
mile trip?
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A boat is crossing a river that runs due north.
The heading of the boat is due east and it is
moving through the water at 12 mph. If the
current of the river is a constant 3.25 mph, find
the true course of the boat.
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A person standing on the top of a 15 foot high
sand pile wishes to estimate the width of the
pile. He visually locates two rocks on the
ground below at the base of the sand pile. The
rocks are on opposite sides of the sand pile, and
he and the two rocks are in line with one
another. If the angle of depression from from
the top of the sand pile to each of the rocks
are 27 degrees and 19 degrees, how far apart are
the rocks?
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HW 7.1bPg 528-529 49-59, 63, 65, 68
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Not used
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7.2 Day 1
Section 7.2 The Law of Sines
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Oblique Triangle (None of the angles is a right
angle)
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To solve an oblique triangle need to find all the
length of all the sides and the measure of each
angle.
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You can solve an oblique triangle only under the
following conditions
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OBJECTIVE 1
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OBJECTIVE 2
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SSA --- The Ambiguous Case
When using the Law of Sines to solve in the case
of SSA, it is possible to get no triangle, one
triangle, or two different triangles
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HW 7.2aPg 539 9-35 Odd
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7.2 day 2

• Board Work
• Do problems from extra examples
• HW 7.2b Pg 539 18-32 Even

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Extra Examples
Use the information given about the triangle to
solve the triangle
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7.2 Day 3
Section 7.2 The Law of Sines
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OBJECTIVE 3
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HW 7.2cPg 539 540 37-49 Odd
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7.3 Day 1
Section 7.3 The Law of Cosines
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OBJECTIVE 1
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OBJECTIVE 2
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HW 7.3aPg 546-547 9-31 Odd
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7.3 Day 2
Section 7.3 The Law of Cosines
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Cosines
Sines
Cosines
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OBJECTIVE 1
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OBJECTIVE 2
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OBJECTIVE 3
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HW 7.3bPg 546-548 18-28 Even, 33-39 Odd
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7.4 day 1
Section 7.4 Area of a Triangle
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OBJECTIVE 1
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Find the area of the triangle
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Find the area of the triangle
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OBJECTIVE 2
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Find the area of the triangle
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Find the area of the triangle
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HW 7.4Pg 552-553 5-23 Odd