Download Geometry 7.5 Tangent Ratio Notes

Geometry 7.5 Tangent Ratio Notes
Warm­Up
Agenda:
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- Warm-Up (Review of similar triangles)
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March 16, 2016
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a) What theorem or postulate justifies that these triangles are similar?
b) Find the value of x, using the following part of a proportion: 10 = __
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a) b) Find the value of x: 4 = __
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- HW Quiz #7.1
- Investigation
- 7.5 Examples from PW
- HW #7.5
Big Idea: What is the tangent ratio?
You will find missing sides of a right
triangle using the tangent ratio.
Vocabulary: tangent ratio, opposite
leg, adjacent leg
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Geometry 7.5 Tangent Ratio Notes
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Check your homework please...
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Geometry 7.5 Tangent Ratio Notes
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Geometry 7.5 Tangent Ratio Notes
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Geometry 7.5 Tangent Ratio Notes
March 16, 2016
Big Idea for the Chapter
How are the sides and angles related to each other in a right triangle?
How can we use these relationships to find missing side lengths and
angles?
What have we done so far? What are we given for each?
- Pythagorean Theorem
- Special Right triangles
Where are we headed?
- We are going to look at triangles with angles other than 45, 30, or 60
degrees
- We are going to work with a very famous ratio - the ratio of the legs of
a right triangle and use it to find missing side lengths...
http://tube.geogebra.org/student/m1005083
http://www.geogebratube.org/student/m32568?lang=en
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Geometry 7.5 Tangent Ratio Notes
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Please complete these questions on a separate sheet of paper... Please write your answers in complete sentences.
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Geometry 7.5 Tangent Ratio Notes
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Geometry 7.5 Tangent Ratio Notes
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Geometry 7.5 Tangent Ratio Notes
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Let's summarize these results
in your theorem/postulate list
B
opposite
a
C
hypotenuse
c
b
A
adjacent
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Geometry 7.5 Tangent Ratio Notes
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Turn to p. 136 in PW...
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