Download Keys ALG2 SY13-14 Openers 5-28

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Algebra 2 Opener(s) 5/28
5/28
It’s National Brisket Day, National Senior Health and
Fitness Day, Whooping Crane Day, Amnesty Day, the
Feast of ZeroWork, Hamburger Day and James Bond
Day!!! Happy Birthday Ian Fleming, Carey Mulligan,
Colbie Caillat, Toronto Mayor Rob Ford, John Fogerty,
Patch Adams, Gladys Knight, Rudy Giuliani, Maeve
Binchy, Walker Percy, Patrick White and Jim Thorpe!!!
5/28
What to do today:
1. Do the opener.
2. Ask HW ?s.
3. Practice trig applications.
4. Record s of elevation and depression models.
5. Practice s of el. and dep.
6. Do the exit pass.
TODAY’S OPENER
In the figure below, what is the length of side b?
√170
7
Agenda
1. Opener (5)
2. HW ?s (5)
3. Practice: Wksht. 7-5, p. 378 (15)
4. Models: Angles of Elevation and Depression (15)
5. Practice: Wksht. 7-5, p. 377-378 (10?)
6. Exit Pass (5)
Standard(s)
 CCSS-M-G-SRT.8: Use trigonometric ratios and PYT to
solve right triangles (in applied problems).
Essential Question(s)
a. How do I (HDI) find a right  missing side measure or
angle?
Objective(s)
 Students will be able to (SWBAT) find the measure of a
‘missing’ hypotenuse.
 SWBAT find the measure of a ‘missing’ leg.
 SWBAT draw and label right s.
 SWBAT find a missing non-right angle in a right triangle.
 SWBAT apply PYT.
 SWBAT manipulate trigonometric ratios.
b
√𝟐𝟏𝟗
√𝟏𝟕𝟕
11
√𝟏𝟔𝟑
10
The Last Opener
The roof of the house shown below is a right . The front of the
house forms a square. Which of the following is the correct
relationship among s and sides in the figure?
s
r
X
t
𝒔
Sin X = 𝒓
Cos X =
𝒕
Cot X =
Tan X = 𝒓
𝒕
Sec X = 𝒔
𝒓
𝒕
𝒓
𝒕
Exit Pass
SHOW WORK!
The Last Exit Pass
HOMEWORK Period 4, 5 & 8
Finish Geo Wksht. 7-4, 373.
Extra Credit
Period 4
Jenny V. (18x)
Abby (15x)
Alfredo (13x)
Jesse (2x)
Brian R. (14x)
Vanessa (13x)
Giselle
Veronica (2x)
Jasmine (3x)
Miguel (8x)
Gio (4x)
Period 5
Jackie (19x)
Miguel (4x)
Quetzali (5x)
Miguel
Veronica (16x)
Steven
Romy (3x)
Adilene (5x)
Jasmine
Alma
Period 8
Maria (3x)
Jessica (2x)
Jesus P.
Xavier (7x)
Lupe (8x)
Sandra (10x)
Lyiah
Sergio (2x)
Jasmine
Denise
Marisol
Erica
Kayla (2x)
Andrea
Laneka
Marco
Classwork Rubric
Concessions Systems Worksheet, #1-4
50%: Setup equations for #1.
64%: Above conditions plus correct #1 solution.
76%: Above conditions plus correct setup of equations for #2.
88%: Above conditions plus correct #2 solution and correct setup of
equations for #3.
93%: Above conditions plus correct #3 solution and correct setup of
equations for #4.
100%: Above conditions plus correct #4 solution.
May 16, 2014
Some Of Hancock’s Classes Are Hard To Obtain A’s (in)
I know about
PYT…
If you have the measures of 2 sides of a right triangle, you can find the 3 rd
by using:
12
a 2 + b2 = c 2
15
but what happens
if I only know an
angle measure
and 1 side?
Essential
Question(s)
 How do I (HDI)
find the measure
of ‘immeasurable’
distances in a
triangle?
Objective(s)
 Students will be
able to (SWBAT)
name the three
trigonometric
ratios and their
corresponding
fractions.
 SWBAT
determine
numerical
trigonometric
ratios in a
triangle.
 SWBAT find
missing side
lengths in a
triangle using
trigonometric
ratios.
If you have the measure of 1 side and 1 angle of a right triangle, you can
find the other sides by using:
12
SOHCAHTOA
15°
Some Of
Hancock’s
SOH
Classes Are
Hard
CAH
To Obtain
A’s (in)
TOA
Sine
(Sin)
Cosine
(Cos)
Tangent
(Tan)
Opposite
Hypotenuse
Adjacent
Hypotenuse
Opposite
Adjacent
𝑶𝑷𝑷
𝑯𝒀𝑷
𝑨𝑫𝑱
𝑯𝒀𝑷
𝑶𝑷𝑷
𝑨𝑫𝑱
The HYPOTENUSE is the looooooooooongest side of the triangle.
The OPPOSITE side is the side across from the known angle.
The ADJACENT side is the side touching the known angle.
JENNY’S FISHTAIL
Step 1.
Draw an arrow from the known (NON-90°)  to the side
across from it. That’s the OPP (opposite side).
Step 2.
Draw an arrow from that arrowhead around the right 
box. That’s the ADJ (adjacent side).
Step 3.
Draw an arrow from that arrowhead to the longest
side. That’s the HYP (hypotenuse).
Models
Practice / Homework
j