Basic Technical Mathematics, 11th Edition

CHAPTER 9 REVIEW EXERCISES

CONCEPT CHECK EXERCISES

Determine each of the following as being either true or false.

1. To add two vectors by use of a diagram, place the tail of the second at the head of the first, keeping magnitudes and directions. The sum is the vector from the tail of the first to the head of the second.

2. For vector A, in standard position at angle $\theta \hspace{0.17em},\hspace{0.17em}$ of magnitude A, the magnitude of the x-component is $A_x\hspace{0.17em}=\hspace{0.17em}A\sin \theta \hspace{0.17em}.\hspace{0.17em}$

3. In adding vectors, the answer is the magnitude of the resultant.

4. The Law of Sines is used in solving a triangle for which two sides and the included angle are known.

5. The Law of Cosines is used in solving a triangle for which two sides and the angle opposite one of them are known.

6. The ambiguous case occurs when two ...