3Tvwo CH6 SUMMARY p.214-217

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 3

Ch 6 SUMMARY, p.214-217

The Summary -as usual- gives you:

+ fine explanations 

+ a few exercises to practice 

Before you start on the SUMMARY...

+  we will discuss:

+ how to calculate a line segment in a cuboid once more

+ Study squarers feel welcome to

1. follow this or

2. leave for the Study square.

Question:

 In what cross-section does angle DFB lie?

Answer this question in the next slide!

Cross-section: ....

1. BGHD
2. ABGH
3. BDHF
4. BCHE

Here is a Sketch of the cross-section, in which you can calculate angle DFB.

Which line segment do you first have to calculate?
In which face of the cuboid?

1. BD in BCGF
2. BF in ABFE
3. BD in BDHF
4. CH in CDHG

After you have calculated BD, then how to find angle DFB ?

Give your answer in

the next slide!

How to calculate angle DFB?

1. cos angle DFB
2. sin angle DFB
3. tan angle DFB
4. Pythagoras

IN the next slide you see the results.