Fill In The Missing Angle

                       Lesson 1

Problem:    

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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