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3Tvwo §6.5 / 3Thavo §6.6 Angles in solids
§6.5 or §6.6 Angles in solids
Start yourself by making exercise
+ 33 p.218 (3T havo) or
+ 27 p.208 (3T vwo) !
1 / 31
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Slide 1:
Tekstslide
Wiskunde
Middelbare school
havo, vwo
Leerjaar 3
In deze les zitten
31 slides
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interactieve quizzen
en
tekstslides
.
Lesduur is:
50 min
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Onderdelen in deze les
§6.5 or §6.6 Angles in solids
Start yourself by making exercise
+ 33 p.218 (3T havo) or
+ 27 p.208 (3T vwo) !
Slide 1 - Tekstslide
Explanation §6.6
After you tried 27 / 33 for yourself, we are now going to
study the Method to:
Calculate the angle between two line segments in a solid!
Slide 2 - Tekstslide
Slide 3 - Tekstslide
Slide 4 - Tekstslide
3Tvwo:
Difficult exercise from:
§6.4 vwo: 26
§6.5 havo: 32
'Calculating in right-angles triangles'.
Slide 5 - Tekstslide
3Tvwo 26, p.206
Slide 6 - Tekstslide
Make a in your Notebook now,
if you did not manage to do so earlier!
Slide 7 - Tekstslide
Slide 8 - Tekstslide
What is the good order from now on?
Calculate ......, ......, ........ and .......
A
SP, HP, PZ and HZ
B
PZ, HP, SP and HZ
C
HP, SP, PZ and HZ
D
HP, SZ, PZ and HZ
Slide 9 - Quizvraag
In the next slides,
You will be shown exactly how to do work out 26.
1. Compare to your own work.
2. If you did not manage at all, at home, then follow the steps carefully and
3. Later, at home, try 26 again!
4. Using your Memory and Creativity and finally checking with the Solutionsbook,
you will have learnt a lot!
Slide 10 - Tekstslide
Slide 11 - Tekstslide
next step: calculate SP.
Slide 12 - Tekstslide
Slide 13 - Tekstslide
next: calculate PZ
Slide 14 - Tekstslide
finally : calculate HZ !
Slide 15 - Tekstslide
3Thavo 32, p.216
Slide 16 - Tekstslide
Task: Think of a way to find the answer.
Key this in in the next slide!
Slide 17 - Tekstslide
How to calculate 32a?
With ...............
A
cosine 18 degrees
B
tan 18 degrees
C
Pythagoras
D
a ratio table
Slide 18 - Quizvraag
Answer to 32a:
Slide 19 - Tekstslide
Task: think of a way to find the answer.
Key this in, in the next slide!
Slide 20 - Tekstslide
How to calculate 32b ?
With ........................
A
sin angle B
B
Pythagoras
C
tan angle B
D
tan angle B
Slide 21 - Quizvraag
answer to 32b:
Slide 22 - Tekstslide
Slide 23 - Tekstslide
or is it ??!
Slide 24 - Tekstslide
What is meant by 32c ?
Key this in, in the next slide!
Slide 25 - Tekstslide
What is meant by 32c?
Slide 26 - Woordweb
Answer:
In 32c they mean:
the difference between:
+ distance AB and
+ the length of the stretched cord
Slide 27 - Tekstslide
What is not helpful, in calculating 32c?
(one option only)
A
cosine angle A
B
tan angle A and tan angle B
C
Pythagoras in both right-angled triangles
D
sine angle B
Slide 28 - Quizvraag
Explanation:
Only answer B was certainly not helpful, because
the tangent does not deal with the hypotenuse -or longest side in a triangle- and that is the side we need to know!
Slide 29 - Tekstslide
Slide 30 - Tekstslide
Homework time.
Slide 31 - Tekstslide
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