In deze les zitten 23 slides, met interactieve quizzen en tekstslides.
Lesduur is: 60 min
Onderdelen in deze les
Cosine
March 19th
t3g
11:00
Camera ON
Slide 1 - Tekstslide
Schedule
Announcements 5 min
Review: sine 10 min
Cosine10 min Quiz questions
Practice 35 min Break-out rooms
Slide 2 - Tekstslide
Programme
Now also in Teams!
Files - Lesmateriaal - Study planners
Slide 3 - Tekstslide
Got It
'November' info not applicable
Amount of exercises done is visible
Work on it in the time given
Slide 4 - Tekstslide
Test ch.1
3 students
Redo (max grade 5.5):
Tuesday, March 23rd, 5th period
Slide 5 - Tekstslide
Test ch.3
Was summative! So check SOM later
Redo (max grade 5.5):
Thursday, April 13th, 5th period
Want to join? Let me know (end of the lesson)
Slide 6 - Tekstslide
Test ch.4-6-7.1
Video this afternoon
Slide 7 - Tekstslide
Announcements
No more quizzes
Instead: 50% Parabola Project
25% quiz 1
25% quiz 2
Slide 8 - Tekstslide
Last lesson's
Intended Learning Outcomes
At the end of the lesson you could...
Use tan and tan appropriately
Calculate sides with sine
−1
Slide 9 - Tekstslide
____Review____ Calculate angle A in the triangle on the right. Try to explain (in words or math) the required steps. Done? Read theory A (p.62) and try 42
Slide 10 - Open vraag
Today's
Intended Learning Outcomes
At the end of the lesson you can...
Use sin, cos and tan and their inverses appropriately
Slide 11 - Tekstslide
Cosine
−1
cos(∠)=HA
cos(HA)=∠
Slide 12 - Tekstslide
Cosine
Example: calculate BC.
−1
cos(∠)=HA
cos(HA)=∠
Slide 13 - Tekstslide
Cosine
Example: calculate .
−1
cos(∠)=HA
cos(HA)=∠
∠B
Slide 14 - Tekstslide
Trigonometric ratios
How to remember
SOH
CAH
TOA
Slide 15 - Tekstslide
Trigonometric ratios
How to remember
SOH
CAH
TOA
cos(∠)=HA
sin(∠)=HO
tan(∠)=AO
Slide 16 - Tekstslide
Trigonometric ratios
Want to know a side? Want to know an angle?
Use sin/cos/tan Use sin /cos /tan
calculator:
shift --> sin/cos/tan
−1
−1
−1
Slide 17 - Tekstslide
You want to know the length of KM. What do you use?
A
Tangent
B
Sine
C
Inverse sine
D
Inverse cosine
Slide 18 - Quizvraag
You want to know the size of What do you use?
∠C.
A
Tangent
B
Sine
C
Inverse sine
D
Inverse cosine
Slide 19 - Quizvraag
You want to know the length of LM. What do you use?
A
Inverse sine
B
Inverse cosine
C
Tangent
D
Cosine
Slide 20 - Quizvraag
Exercises
Chapter 7
Math A/C
Do 42, 43, 44, 45, 46, 47, 48, 51, 52, 53, 55, 56, 57, 58 and 59
...and check SOM to see if you want to redo test ch.3!