Chapter 12.4, Problem 12OE

To determine

To determine the value of given functions to four significant digits.

Answer to Problem 12OE

  $\csc {47}^{\circ }20\text{'}=1.360$

Explanation of Solution

Given information :

  $\csc {47}^{\circ }20\text{'}$

First we shall convert the minutes into degrees.

We know that $1\text{'}={\left(\frac{1}{60}\right)}^{\circ }$

Therefore $20\text{'}={\left(\frac{20}{60}\right)}^{\circ }={0.33}^{\circ }$

  $\csc {47}^{\circ }20\text{'}=\csc {47.33}^{\circ }$

Here we shall use the calculator to find the value of the given function.

Hence the value is,

  $\csc {47.33}^{\circ }=1.360$