25. Susie needs to know the perimeter of her garden to buy fencing. She measured the length as x^2-6x + 5and the width as x^2-x-6. What is the perimeter of the entire garden?

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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.