Chapter 11.3, Problem 28E

(a)

To determine

To Explain:What does this mean in context of situation?

Answer to Problem 28E

Rotating the short sides of the rectangle ${180}^{°}$ about the origin.

Explanation of Solution

Given: You enter the revolving door at the hotel. You rotate the door ${180}^{°}.$

  

The door is composed of three rectangular glass intersecting at the door axis.

Rotating the door ${180}^{°}.$

That means rotating the short sides of the rectangle ${180}^{°}$ about the origin.

(b)

To determine

To Explain:What does this mean in context of situation?

Answer to Problem 28E

Rotating the short sides of the rectangle ${360}^{°}$ about the origin.

Explanation of Solution

Given: You enter the revolving door at the hotel. You rotate the door ${360}^{°}$ .

  

The door is composed of three rectangular glass intersecting at the door axis.

Rotating the door ${360}^{°}$

That means rotating the short sides of the rectangle ${360}^{°}$ about the origin.