### Home > CALC > Chapter 7 > Lesson 7.3.1 > Problem7-115

7-115.
1. Multiple Choice: Find the area of the largest rectangle that can be inscribed under the graph of y = cos x, in the interval − ≤ x ≤ . 7-115 HW eTool (Desmos). Homework Help ✎

1. 1.10

2. 1.12

3. 1.14

4. 1.16

5. 1.18

Let (a, 0) be the coordinate of the lower right-hand vertex. What will be the coordinates of the other three vertices?

Write an equation for the area of this rectangle, in terms of a. Then optimize it.

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