Opener: Find all the items requested below.

1. AC 2. tanA = 3. mLA =

2

3√3

A

B C

Title: Mar 3­12:23 PM (1 of 9)

Section 8.3: Solving Right Triangles

How can we solve for missing angles???

2

3√3

A

B C

Title: Mar 3­12:22 PM (2 of 9)

Practice: With your partners complete the two problems below. Raise your hand when you're done.

Solve the right triangle. Round your answers to the nearest hundreth when appropriate.

1.

2.

6

71

A

B C

A

B C

2

11

Title: Mar 3­12:38 PM (3 of 9)

Section 8.4: Angles of Elevation and Depression

Title: Mar 3­12:45 PM (4 of 9)

A tiny little ladybug is sitting in the shade under a plant that is 80 ft from the base of a windmill. The ladybug has a friend who is sitting at the very top of one of the arms of the windmill getting ready to take a ride when the wind picks up. The angle of elevation from the ladybug to his friend is 25 degrees.

How tall is the windmill? How far away from his friend is the ladybug?

Title: Mar 3­12:52 PM (5 of 9)

A tree makes an angle of depression with the sun of 65 degrees and a shadow of 72 ft. How tall is the tree?

Title: Mar 3­12:46 PM (6 of 9)

A kite is flying at an angle of elevation of about 40 degrees.

All 80 m of string have been let out.

Ignoring the sag in the string, find the height of the kite to the nearest 10 m.

Title: Mar 3­12:57 PM (7 of 9)

Mr. Monkey is extremely hungry and wants to get the bananas he's spotted up in a tree first. The problem is that he knows his crazy sister is only 80 feet away from the bananas and Mr. Monkey is afraid that she will get there first. If Mr. Monkey sees the bananas at an angle of elevation of 22 degrees and he is 8 feet closer to the ground than the bananas, how far from the bananas is he? Will he beat his sister to them?

Title: Rain forest scene (8 of 9)

Jack the cat was sitting on a couch 2 feet off the ground when he spotted something on the floor behind him in the kitchen. Jack himself is 1.5 feet tall when he stands on his hind legs. He looks at the mysterious object with an angle of depression of 15 degrees. How far away from the object is he???

??Floor

Couch

Title: Mar 5­8:32 AM (9 of 9)