Cosine (t3g)

Cosine




March 19th
t3g
11:00
Camera ON
1 / 23
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Slide 1: Tekstslide
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In deze les zitten 23 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 60 min

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Cosine




March 19th
t3g
11:00
Camera ON

Slide 1 - Tekstslide

Schedule
  • Announcements                                             5 min
  • Review: sine                                                     10 min
  • Cosine                                                                10 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...
  1. Use tan and tan      appropriately
  2. 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...
  1. 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!


Math B/D
Do 42, 48, 49, 51, 56, 57, 58, 59, 60, 61 and 62

Slide 21 - Tekstslide

Slide 22 - Tekstslide

Test ch.3
Was summative!

Redo (max grade 5.5):
    Thursday, April 13th, 5th period
Want to join? Let me know now

Slide 23 - Tekstslide