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Tangent (t3g)
Tangent
April 15th
t3d
12:05
1 / 24
volgende
Slide 1:
Tekstslide
Wiskunde
Middelbare school
vwo
Leerjaar 3
In deze les zitten
24 slides
, met
interactieve quizzen
en
tekstslides
.
Lesduur is:
60 min
Start les
Bewaar
Deel
Printen
Onderdelen in deze les
Tangent
April 15th
t3d
12:05
Slide 1 - Tekstslide
Schedule
Programme
5 min
Review: hyperbolas, rational equations 10 min
Tangent
15 min
Quizzes
Practice
15 min
Kahoot!
15 min
Slide 2 - Tekstslide
Programme
Slide 3 - Tekstslide
Review - 5 min - in your notebook
Do a) or b) on the right and upload a picture.
a) Draw the
graph of
b) Solve:
y
=
x
1
6
Slide 4 - Open vraag
Intended Learning Outcomes
At the end of the lesson you can...
Calculate the
tangent
of an elevation
Recognize
tangent
in contexts
Calculate an angle with
inverse tangent
Slide 5 - Tekstslide
Gradient & tangent (ch.7.1)
The
____________
rule
3
=
2
6
a
=
c
b
Slide 6 - Tekstslide
Gradient & tangent (ch.7.1)
The
____________
rule
3
=
2
6
a
=
c
b
Slide 7 - Tekstslide
What's the first word that
comes to mind?
Slide 8 - Open vraag
Have you ever seen such a sign?
Yes
No
Slide 9 - Poll
Gradient & grade
From linear graphs:
g
r
a
d
i
e
n
t
=
r
u
n
r
i
s
e
Slide 10 - Tekstslide
Gradient & grade
From linear graphs:
% -------------->
g
r
a
d
e
=
r
u
n
r
i
s
e
⋅
1
0
0
Slide 11 - Tekstslide
What's the run
of the hill?
A
388.9 m
B
12.6 m
C
257.1 m
D
126.0 m
Slide 12 - Quizvraag
What is the run?
A
4.15
B
3024
C
30.24
D
414.8
Slide 13 - Quizvraag
Tangent
Solve.
Slide 14 - Tekstslide
Describe the relationship between the gradient of a hill, and its angle of elevation. (2 min)
Slide 15 - Open vraag
Tangent
Solve.
Slide 16 - Tekstslide
A hill has an angle of elevation of 26 degrees. What is the grade?
A
26%
B
0.26
C
0.49
D
49%
Slide 17 - Quizvraag
Calculator
:
gradient = tan(26) = 0.49
grade = 0.49 * 100% = 49%
Slide 18 - Tekstslide
But what if...
...I want to know an angle, and I have the gradient?
Slide 19 - Tekstslide
But what if...
...I want to know an angle, and I have the gradient?
Slide 20 - Tekstslide
A
31.8 degrees
B
29.8 degrees
C
17.1 degrees
D
19.0 degrees
Slide 21 - Quizvraag
What's the angle of elevation for a gradient of 1? Explain.
Slide 22 - Open vraag
Practice
Maths A/C
6, 8, 9, 13
17, 18, 19
Maths B/D
8, 10, 14
18, 20, 21
Slide 23 - Tekstslide
Kahoot!
Slide 24 - Tekstslide
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