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04 sincostan.notebook
1
February 14, 2019
Nov 191:41 PM
Bellwork
h f
g1
2Look at 1
Which side is... hyp: ____
opp: ____
adj: ____
Look at 2
Which side is... hyp: ____
opp: ____
adj: ____
Jul 318:57 PM
Assignments: If you weren't here last week (Wednesday/ Thursday): Makeup the test on Similarity and
Dilations by tomorrow morning.
Assignment due tomorrow: "Labeling Opposite, Adjacent, and Hypotenuse"
Assignment due Monday: "Simple Trig Ratios"
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04 sincostan.notebook
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February 14, 2019
Mar 79:18 AM
Jul 318:16 AM
Objective:SWBAT give the sine, cosine, and tangent ratio of a given angle.
Today: Similarity review question. ACT questions. Notes/practice on sine, cosine, tangent. Assignment: "Simple Trig Ratios"
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04 sincostan.notebook
3
February 14, 2019
Feb 1211:20 AM
Name
Date
Period
A student: Come up and get a calculator for each person in your group.
Everyone get a small piece of paper and write the heading at the top.
Feb 1211:20 AM
Hannah wants to find the height of the tallest building in her city. She stands 107 feet away from the building. There is a tree 32 feet in front of her that is 18 feet tall. How tall is the building to the nearest foot?
Draw two triangles set up a proportion show work solve.
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04 sincostan.notebook
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February 14, 2019
Feb 1210:00 AM
ACT practice questions. 2 minutes per question. TRY each question.
On #3, there is an extra " | " symbol...
Feb 1210:00 AM
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04 sincostan.notebook
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February 14, 2019
Feb 1210:00 AM
Feb 1210:00 AM
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Intro to Sine, Cosine, and Tangent
Remember this...
SOH CAH TOA
This is a way to remember the "definitions" of sine, cosine, and tangent.
Mar 82:11 PM
SOH CAH TOA
S : Sine C : Cosine T : Tangent
Care to take a guess what O, A, and H represent? Hint: it deals with Tuesday's lesson.
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Definition of Sine (SOH)
sine θ = opposite sidehypotenuse
shorthand: sin
Mar 82:11 PM
Definition of Sine (SOH)
5
12
13
A
sin = A
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Definition of Sine (SOH)
5
12
13
Bsin = B
Feb 129:57 AM
Get out the questions we were answering on a sheet of paper last class (Tuesday).
If you were absent, get out a sheet of paper, at the top write "Absent Tuesday" and the heading. You will begin with today's questions.
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Practice With Sine (copy the figure)
68
10
A
sin =A
( Definition of Sine (SOH) )
4) B
sin =B
Mar 82:11 PM
Practice With Sine
1026
24A
sin =A
( Definition of Sine (SOH) )
5) B
sin =B
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04 sincostan.notebook
10
February 14, 2019
Mar 82:11 PM
Definition of Cosine (CAH)
cosine θ = adjacent sidehypotenuse
shorthand: cos
Mar 82:11 PM
Definition of Cosine (CAH)
A
cos = A28
45
53
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Definition of Cosine (CAH)B
cos = B28
45
53
Mar 82:11 PM
Practice With Cosine
85
132
157
Acos =A
( Definition of Cosine (CAH) )
6)
B
cos =B
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Practice With Cosine
A
cos =A
15
112113
( Definition of Cosine (CAH) )
7) B
cos =B
Mar 82:11 PM
Definition of Tangent (TOA)
tangent θ = opposite sideadjacent side
shorthand: tan
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Definition of Tangent (TOA)
A
tan = A16
63
65
Mar 82:11 PM
Definition of Tangent (TOA)B
tan = B16
63
65
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04 sincostan.notebook
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February 14, 2019
Mar 82:11 PM
Practice With Tangent
A
tan =A48
55
73
( Definition of Tangent (TOA) )
8)
B tan =B
Mar 82:11 PM
Practice With Tangent
A
tan =A
104 153
185
( Definition of Tangent (TOA) )
9)
B tan =B
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04 sincostan.notebook
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February 14, 2019
Mar 98:24 AM
10) Look at the definition of sine and cosine:
Explain what makes them similar and whatmakes them different.
11) Look at the definition of tangent. What makes tangent different from sine and cosine? Explain.
12) What is the purpose of SOH CAH TOA (be specific)?
sine θ = cosine θ =
tangent θ =
oppositehypotenuse
adjacenthypotenuse
oppositeadjacent
Mar 98:24 AM
13) Give the definitions of sine, cosine, and tangent (fill in the blanks):sin θ = cos θ = tan θ =
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February 14, 2019
Mar 82:11 PM
Everyone receive the "Simple Trig Ratios" paper. Due Monday (but get it done today, and you can turn it in at the end of class).