Trigonometric Ratios

A ratio is a comparison between two things relative to each other. For example, if a group of students has 3 girls and 5 boys, then within the group the ratio of girls to boys is 3 to 5. Or, if one student has 21 books and another has 26 books, then the ratio between the amount of books of the first student to the amount of books of the second student is 21 to 26.

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Let's say that you have downloaded 214 MP3s on your ipod and your best friend has only downloaded 101 on to her ipod. What is the ratio comparing the amount of your MP3s to the amount of her MP3s? What is the ratio comparing the amount of her MP3s to your MP3s? How would you write these two ratios?

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