## Chapter 7

### Trigonometry

#### Section 7.1 (Answers)

1. $75\xb0\times \frac{6{0}^{\prime}}{1\xb0}=450{0}^{\prime}$

2. $54{0}^{\prime}\times \frac{1\xb0}{6{0}^{\prime}}=9\xb0$

3. $1500{0}^{\u2033}\times \frac{{1}^{\prime}}{6{0}^{\u2033}}=25{0}^{\prime}$

4. $90\xb0\times \frac{\pi \text{radian}}{{180}^{\text{o}}}=\frac{\pi}{2}\text{rad}$

5.

6.

7. 1 circle = 360°

2 circles ...

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