Trigonometry sides 2

Recap C11

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Slide 1: Tekstslide

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Recap C11

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Slide 1 - Tekstslide

Today

Recap C11 (10 min)
Exercise on paper (20 min)
Exercise together (10 min)
Exercise on paper or bettermarks (25 min)
Exercise together (10 min)
End lesson (5 min)

Slide 2 - Tekstslide

Calculate ∠F

Round to 2 decimal places

Slide 3 - Tekstslide

Calculate KM

Slide 4 - Tekstslide

Practice test

Work on the practice test
We're going discuss the 4th question in 20 minutes
Till 10:45
Questions about the project?

Slide 5 - Tekstslide

Calculate KM

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 6 - Tekstslide

Calculate KM

cos (66) = \frac{​ K M ​ ​}{​ 1 9 ​}

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 7 - Tekstslide

Calculate KM

cos (66) = \frac{​ K M ​ ​}{​ 1 9 ​}

0.406 . . . = \frac{​ K M ​ ​}{​ 1 9 ​}

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 8 - Tekstslide

Calculate KM

cos (66) = \frac{​ K M ​ ​}{​ 1 9 ​}

0.406 . . . = \frac{​ K M ​ ​}{​ 1 9 ​}

K M = 0.406 . . . \cdot 19

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 9 - Tekstslide

Calculate KM

cos (66) = \frac{​ K M ​ ​}{​ 1 9 ​}

0.406 . . . = \frac{​ K M ​ ​}{​ 1 9 ​}

K M = 0.406 . . . \cdot 19

K M \approx 7.73

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 10 - Tekstslide

Calculate FG

Slide 11 - Tekstslide

Calculate FG

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 12 - Tekstslide

Calculate FG

sin (48) = \frac{​ 7 ​ ​}{​ F G ​}

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 13 - Tekstslide

Calculate FG

0.74 . . . = \frac{​ 7 ​ ​}{​ F G ​}

sin (48) = \frac{​ 7 ​ ​}{​ F G ​}

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 14 - Tekstslide

Calculate FG

0.74 . . . = \frac{​ 7 ​ ​}{​ F G ​}

F G = \frac{​ 7 ​ ​}{​ 0 . 7 4 . . . ​}

sin (48) = \frac{​ 7 ​ ​}{​ F G ​}

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 15 - Tekstslide

Calculate FG

0.74 . . . = \frac{​ 7 ​ ​}{​ F G ​}

F G = \frac{​ 7 ​ ​}{​ 0 . 7 4 . . . ​}

F G \approx 9.42

sin (48) = \frac{​ 7 ​ ​}{​ F G ​}

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 16 - Tekstslide

Exercises

Question 1 & 2
Write down your name
7 minutes
Make them in silence
Write down the whole calculation (round to two decimal places)

Slide 17 - Tekstslide

Exercises

11.2 & 11.3
20 minutes
Raise your finger if you have any questions
Finished? Start with 11.4
Communicate in English please

Slide 18 - Tekstslide

Trigonometry sides 2

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