Download presentation

Presentation is loading. Please wait.

1
LAW OF COSINES

2
**Example 1: Solve the following….**

B 14 ft 8 ft A 19 ft C

3
**Example 2: Solve the following….**

5 cm 8 cm 12 cm

4
**Example 3: Solve the following….**

15 cm 115˚ 10 cm

5
**Example 4: Solve the following….**

18 ft 46.5˚ 10.5 ft

6
Solve the following…. 2.3 mi

7
Another…. 211ft

8
Heron’s Formula

9
**Ex 1. Find the area of the following triangle.**

a = 43m b = 53m c = 72m

10
**Ex 2. Find the Area of the Triangle**

a = b = 52 m c = 28 m 361.8 m2

11
Solve the following: 17,452 ft2

12
One more…. Land in downtown Columbia is valued at $20 a square foot. What is the value of a triangular lot with sides of lengths 112, 148, and 190 feet? $165,554

13
**Determine whether the Law of Sines or the Law of Cosines is needed to solve each of the triangles.**

a.) A = 15o, B = 58o, c = 94 b.) a = 96, b = 43, A = 105o c.) a = 24, b = 16, c = 29 d.) a = 15, c = 42, B = 49o Law of Sines Law of Sines Law of Cosines Law of Cosines

14
**BRING YOUR BOOK TOMORROW!**

HOMEWORK Pg. 423 #’s 1 – 33 odd BRING YOUR BOOK TOMORROW!

15
Partner Problems pg #’s 2, 10, 18, 24, 28, 32, 34, 39, 41, 48 *Quiz Tomorrow

Similar presentations

Presentation is loading. Please wait....

OK

Solving a Sudoku Puzzle

Solving a Sudoku Puzzle

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google