Fill In The Missing Angle

                       Lesson 1

                                                                                                                       

                                                             Problem:    

 

A1

FG = 23 ; BF = 86 ; BG = 56,

Cos____ = 23/ 86

 

              

                                                            Solution       Let the missing value is x than Cos x = 23 / 86             

                                                            Step 1:                      

                                      

                                                            Solution        Cos x = 0.3

                                                            Step 2:                    x = Cos-1 0.3 = 72.5                                                     

                                                                                 

                                                            Solution        Answer: 72.5                  

Step 3:                                                                  

Complete                                                                   

                                                            Try two practice problems:  

                                                                                    Do the following:   

      

A.

FG = 100 ; BF = 11 ; BG = 73

tan____ = 73 / 100

B.

FG = 7 ; BF = 27 ; BG = 70

Cos____ = 7 / 27

                                               

 

 

 

 

                                                                                               

        

 

 

 

 

 

 

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