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Chapter 11: Q. 39 (page 860)

Evaluate and simplify the indicated quantities in Exercises 35鈥�41.
(sint,cost).(cost,-sint)

Short Answer

Expert verified

The simplification of (sint,cost).(cost,-sint)is 0.

Step by step solution

01

Step 1. Given Information.

The quantities:

(sint,cost).(cost,-sint)

02

Step 2. Do the dot product.

By Dot product,

(sint,cost).(cost,-sint)=sint.cost+(-sint.cost)=0

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