Learning Mathematics - MathHelp.com - 1000+ Online Math Lessons - By MathHelp.com
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| 00:0-1 | The following is a selected video from your teacher.com where | |
| 00:03 | you can browse over 450 complete math lessons with example | |
| 00:07 | videos , interactive practice problems , self tests and more | |
| 00:11 | . Try a complete lesson today at your teacher dot | |
| 00:14 | com . The ratio of one number to another is | |
| 00:20 | the result of the first number divided by the second | |
| 00:24 | number . For example , in the diagram shown if | |
| 00:29 | we're asked to find the ratio of the measure of | |
| 00:32 | angle A to the measure of angle be . We | |
| 00:36 | take the measure of angle A . Yeah , divided | |
| 00:42 | by the measure of angle be . And since the | |
| 00:47 | measure of angle a is 60° and the measure of | |
| 00:51 | Angle B is 80°. . We have 60 over 80 | |
| 00:58 | . Uh huh . Notice that 60/80 can be reduced | |
| 01:04 | because 60 and 80 have a greatest common factor of | |
| 01:09 | 20 . So we divide both 60 and 80 by | |
| 01:14 | 20 . Mhm . To get 3/4 . Mhm . | |
| 01:24 | So the ratio of the measure of angle a to | |
| 01:28 | the measure of Angle B is 3/4 . Remember to | |
| 01:33 | always reduce if possible , when finding a ratio . | |
| 01:38 | It's important to understand that a ratio can be written | |
| 01:42 | in three different ways . For example , the ratio | |
| 01:47 | 3/4 can also be written as 3-4 . Mhm Or | |
| 01:58 | 3:4 . Mhm . Make sure you're familiar with all | |
| 02:04 | three ways to write a ratio . |
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