1819 C2X §6.2

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 2

Which exercises/theories should we discuss on the board?

Using Pythagoras' Theorem

We now know that in all right-angled triangles:

summarised in a table:

How to use the table

1) If a drawing is not included: Sketch the triangle, include all known dimensions.

2) Fill in the known dimensions in the table. REMEMBER: hypotenuse in the bottom!

3) Calculate the squares of the known sides.

4) Calculate the square of the unknown side

5) Calculate the length of the unknown side by taking the square root. Give an EXACT answer.

Example 1

1) Sketch:

Example 1

2) Fill in known sides:

Example 1

2) Fill in known sides:

Example 1

3) Calculate the known squares

Example 1

3) Calculate the known squares

Example 1

4) Calculate the unknown square

Example 1

4) Calculate the unknown square

                                                                                         81 - 49 = 32

Example 1

5) Calculate the unknown side

                                                                                        

Example 1

5) Calculate the unknown side

                                                                                        

Other notation option

Homework Friday

Make and correct §6.2