Lesson 6

Are You Ready?

 

Complete these questions. If you experience difficulty and need help, visit Refresher or contact your teacher.

1. Use your calculator to evaluate the following trigonometric ratios to four decimals places. (Make sure your calculator is set to degree mode.)
   1. sin 45°
   2. sin 19°
   3. sin 108°
   4. sin 153°
   
   Answer
2. Use your calculator to find angle A in each of the following. (Round each answer to the nearest tenth.)
   1. sin A = 0.4572
   2. sin A = 0.9101
   3. sin A = 0.1887
   4. sin A = 0.7744
   
   Answer
3. Solve the following equations for the unknown variable. (Round each answer to the nearest tenth.)
   1.  
   2. 
   3. 
   4. 
   
   Answer
4. Solve for the unknown side x using the sine ratio:
   
   
    
   

    

   (Round each answer to the nearest tenth of a unit.)
   1. 
      
      
      Answer
   2. 
      
      
      Answer
5. Solve for the unknown angle theta (θ) using the sine ratio:
   
   
    
   
   
   (Round each answer to the nearest degree.)
   1. 
      
      
      Answer
   2. 
      
      
      Answer

If you answered the Are You Ready? questions without difficulty, move to Discover.

 

If you found the Are You Ready? questions difficult, complete Refresher.