Trigonometry sides 2

Recap C11

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Slide 1: Diapositive

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Recap C11

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Slide 1 - Diapositive

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 - Diapositive

Calculate ∠F

Round to 2 decimal places

Slide 3 - Diapositive

Calculate KM

Slide 4 - Diapositive

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 - Diapositive

Calculate KM

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 6 - Diapositive

Calculate KM

cos (66) = \frac{​ K M ​ ​}{​ 1 9 ​}

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 7 - Diapositive

Calculate KM

cos (66) = \frac{​ K M ​ ​}{​ 1 9 ​}

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

cos (θ) = \frac{​ a ​ ​}{​ h ​}

Slide 8 - Diapositive

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 - Diapositive

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 - Diapositive

Calculate FG

Slide 11 - Diapositive

Calculate FG

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 12 - Diapositive

Calculate FG

sin (48) = \frac{​ 7 ​ ​}{​ F G ​}

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 13 - Diapositive

Calculate FG

0.74 . . . = \frac{​ 7 ​ ​}{​ F G ​}

sin (48) = \frac{​ 7 ​ ​}{​ F G ​}

sin (θ) = \frac{​ o ​ ​}{​ h ​}

Slide 14 - Diapositive

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 - Diapositive

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 - Diapositive

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 - Diapositive

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 - Diapositive

Trigonometry sides 2

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