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https://prnt.sc/r2irrj

 

thank you 

 Feb 14, 2020
 #1
avatar+109740 
+1

Note that OL  and  ON  form a 90° angle because they are perpendicular

 

This must mean that the sum of angles LOM and MON  = 90°   ........so.....

 

3x -  15  + 5x  -  23   =   90      simplify

 

8x - 38  = 90     add 38  to  both sides

 

8x =  128         divide  both sides  by 8

 

x = 16

 

 

So....MON =   5(16)  - 23 =   80  - 23   =  57°

 

 

cool cool cool

 Feb 14, 2020

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