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Tan-1 and opposite-adjacent (t3g)
April 21st
t3d
11:30
Homework on
your table!
tan
(
∠
)
=
.
.
.
.
.
.
Today's exercises
Math A/C
24,
26
, 27, 29, 31, 32
Math B/D
23, 27, 31, 32, 34
Discuss
26
later
1 / 18
next
Slide 1:
Slide
Wiskunde
Middelbare school
vwo
Leerjaar 3
This lesson contains
18 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
60 min
Start lesson
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Share
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Items in this lesson
April 21st
t3d
11:30
Homework on
your table!
tan
(
∠
)
=
.
.
.
.
.
.
Today's exercises
Math A/C
24,
26
, 27, 29, 31, 32
Math B/D
23, 27, 31, 32, 34
Discuss
26
later
Slide 1 - Slide
Schedule
Homework check
10
min
Announcements
Review: tangent 10 min
15 min
Practice
20 min
Finally, some Gooseboard! 20 min
tan
(
∠
)
=
.
.
.
.
.
.
Slide 2 - Slide
Programme
Slide 3 - Slide
Announcements
Got It!
Slide 4 - Slide
the gradient of a hill
vs.
its angle of elevation
Slide 5 - Mind map
Last lesson's
Intended Learning Outcomes
At the end of the lesson you could...
Do calculations with gradient, grade,
tangent and inverse tangent
Slide 6 - Slide
(inverse)
tangent
shift --> tan
gets you
tan
tan
(
∠
)
=
r
u
n
r
i
s
e
tan
(
r
u
n
r
i
s
e
)
=
∠
−
1
−
1
Slide 7 - Slide
Review (5 min)
A hill has an angle of elevation of 25 degrees. The run is 130 meters.
An elevator travels along the rise of the hill at a speed of 4 km/h. How long will it take to reach the top?
Slide 8 - Slide
Today's
Intended Learning Outcomes
At the end of the lesson you can...
Use
opposite
and
adjacent
sides in calculations with tangent
Slide 9 - Slide
Tangent
tan
(
∠
)
=
r
u
n
r
i
s
e
Slide 10 - Slide
Tangent
____________________
tan
(
∠
)
=
r
u
n
r
i
s
e
Slide 11 - Slide
Tangent
____________________
tan
(
∠
)
=
r
u
n
r
i
s
e
tan
(
∠
)
=
a
d
j
a
c
e
n
t
o
p
p
o
s
i
t
e
=
A
O
Slide 12 - Slide
Example
tan
(
∠
M
)
=
A
O
tan
(
∠
M
)
=
L
M
K
L
tan
(
A
O
)
=
∠
M
−
1
tan
(
L
M
K
L
)
=
∠
M
−
1
Slide 13 - Slide
Example
Calculate
M.
∠
15
22
Slide 14 - Slide
(inverse)
tangent
shift --> tan
gets you
tan
tan
(
∠
)
=
A
d
j
a
c
e
n
t
O
p
p
o
s
i
t
e
tan
(
A
d
j
a
c
e
n
t
O
p
p
o
s
i
t
e
)
=
∠
−
1
−
1
Slide 15 - Slide
Fill in.
In the triangle on the right,
the rule is
tan
(
∠
B
)
=
.
.
.
A
5
.
6
4
.
2
B
5
.
6
7
C
7
4
.
2
D
4
.
2
5
.
6
Slide 16 - Quiz
Calculate __A.
Round to the
nearest tenth.
∠
A
3
6
.
9
°
B
6
4
.
4
°
C
5
3
.
1
°
D
9
.
3
°
Slide 17 - Quiz
Practice
Last 20 minutes:
Gooseboard
Chapter 7
Math A/C
24,
26
, 27, 29, 31, 32
Math B/D
23, 27, 31, 32, 34
Discuss
26
later
Slide 18 - Slide
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