unit 2d day 2: special right t...unit 2d day 2 notes mt3.notebook february 18, 2014 unit 2d day 2:...

5
unit 2d day 2 notes mt3.notebook February 18, 2014 Unit 2D day 2: Special Right Triangles 454590 Triangles 1 1 2 2 3 3 4 4 The length of the hypontenuse is always going to be : Where h is the hypotenuse and l is the length of the legs.

Upload: others

Post on 23-Aug-2020

1 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Unit 2D day 2: Special Right T...unit 2d day 2 notes mt3.notebook February 18, 2014 Unit 2D day 2: Special Right T45 45 90 Triangles riangles 1 1 2 2 3 3 4 4 The length of the hypontenuse

unit 2d day 2 notes mt3.notebook February 18, 2014

Unit 2D day 2: Special Right Triangles

45­45­90 Triangles

1

1

2

2

3

3

4

4

The length of the hypontenuse is always going to be :

Where h is the hypotenuse and l is the length of the legs.

Page 2: Unit 2D day 2: Special Right T...unit 2d day 2 notes mt3.notebook February 18, 2014 Unit 2D day 2: Special Right T45 45 90 Triangles riangles 1 1 2 2 3 3 4 4 The length of the hypontenuse

unit 2d day 2 notes mt3.notebook February 18, 2014

Example 

45 45

9

h

Find the length of the hypontenuse.

a.)

b.)

45 45h

Got it?

What is the length of the hypotenuse of a 45­45­90 triangle with leg length         ?

Page 3: Unit 2D day 2: Special Right T...unit 2d day 2 notes mt3.notebook February 18, 2014 Unit 2D day 2: Special Right T45 45 90 Triangles riangles 1 1 2 2 3 3 4 4 The length of the hypontenuse

unit 2d day 2 notes mt3.notebook February 18, 2014

Example

What is the value of x?

45

45

x6

Got it?

The length of the hypotenuse of a 45­45­90 triangle is 10.  What is the length of one leg?

Page 4: Unit 2D day 2: Special Right T...unit 2d day 2 notes mt3.notebook February 18, 2014 Unit 2D day 2: Special Right T45 45 90 Triangles riangles 1 1 2 2 3 3 4 4 The length of the hypontenuse

unit 2d day 2 notes mt3.notebook February 18, 2014

For all 30­60­90 triangles, 

30­60­90 Triangles

30

60

Short Leg (s)

Long Leg (l)

hypotenuse (h)

Example

What are the values of h and l ?

30

60

2

l

h

Page 5: Unit 2D day 2: Special Right T...unit 2d day 2 notes mt3.notebook February 18, 2014 Unit 2D day 2: Special Right T45 45 90 Triangles riangles 1 1 2 2 3 3 4 4 The length of the hypontenuse

unit 2d day 2 notes mt3.notebook February 18, 2014

Example

What are the values of s and h?

30

60

5

sh

For all 30­60­90 triangles, 

Example

What is the value of x?

45

7x

45

x 8

30x

12

30

x 6

x=9.9

x=3

x=5.7

x=10.4