### Home > PC > Chapter 1 > Lesson 1.1.3 > Problem 1-39

1-39.

Use the inverse sine button on your calculator.

Follow the same procedure your used part (a), but this time you will need to use a different trigonometric ratio.

1-39.

Use the inverse sine button on your calculator.

Follow the same procedure your used part (a), but this time you will need to use a different trigonometric ratio.