John earned $45.90 during the summer break. he used of the money to buy trading cards. then, he used of the remaining amount to buy a sketchbook, and also spends $4.50 on comic books.

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.

Depends by how many apples are in a case