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w4d3 trig 1.notebook
1
May 01, 2013
Aug 911:10 PM
Aim:
Due Today: Due Next Class:
Get Ready:
What is Trigonometry?
HW 8HW 7
Use the pythagorean theorem to find the missing sides of the following triangles. Your answer should be in simplest radical form.
6 ft
8 ft
c 4cm
4 √2 cm
a
Unit: Radicals and TrigLesson: 4.3.3
May 1st
Get Ready
w4d3 trig 1.notebook
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May 01, 2013
Feb 21:06 PM
Homework Review
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May 01, 2013
May 12:46 PM
w4d3 trig 1.notebook
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May 01, 2013
May 12:47 PM
w4d3 trig 1.notebook
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May 01, 2013
May 12:49 PM
w4d3 trig 1.notebook
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May 01, 2013
Jan 211:39 PM
Identify the Hypotenuse
h
h
h
h
h
hh
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May 01, 2013
Apr 254:06 PM
What is Trigonometry ???
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May 01, 2013
Jan 2211:26 AM
A
Each angle in a triangle has an opposite side and an adjacent side.
The hypotenuse is NEVER the opposite or the adjacent side.
B
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May 01, 2013
Jan 2211:29 AM
JD
O A H O A H
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May 01, 2013
Apr 302:15 PM
Trig 1: Finding Trig Ratios
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Jan 2211:40 AM
The Sine Function
The sine of an angle is the measure of the opposite side divided by the measure of the hypotenuse.
sin = oppositehypotenuse
A
10 in
8 in
6 in
Sin A =
w4d3 trig 1.notebook
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May 01, 2013
Jan 2211:42 AM
The Cosine Function
The cosine of an angle is the measure of the adjacent side divided by the measure of the hypotenuse.
cos = adjacenthypotenuse
A
10 in
8 in
6 in
cos A =
w4d3 trig 1.notebook
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May 01, 2013
Jan 2211:44 AM
The Tangent Function
The tangent of an angle is the measure of the opposite side divided by the measure of the adjacent side.
tan = opposite adjacent
A
10 in
8 in
6 in
tan A =
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May 01, 2013
May 13:06 PM
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May 01, 2013
Apr 254:09 PM
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May 01, 2013
May 111:16 AM
How can we use the Calculator to find the Trig Value of an angel?
sin 48o
cos 115o
tan 87o
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May 01, 2013
Jan 2211:45 AM
a
b
a
b6.1 in
9.2 in
11.04 in
sin b= _______
12 m
11 m16.3 m
tan a = _______
4.5 cm
10 cm 11 cm
cos a= _______
17 ft
7 ft
sin b= _______
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May 01, 2013
Jan 223:28 PM
4. The sine ratio for an angle a is 14/17. What is the length of the hypotenuse of the triangle?
5. The tangent ratio for an angle b is 9/7. What is the length of the side opposite of angle b?
6. The hypotenuse of a right triangle is 15 cm in length. The tangent ratio for an angle b in the triangle is 9/12. Draw a picture of the triangle.
17
9
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May 01, 2013
Jan 2211:58 AM
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May 01, 2013
Aug 911:14 PM
Recap
Next Class: Due Next Time:
Key Points
