+0  
 
0
298
1
avatar+222 

In the figure, YX
 and YZ
 are tangents to circle A at points X and Z, respectively.  

 

measure of arc XZ= 140
measure of arc XSZ= 220

 

What is the measure of  ∠XYZ ?

 

 

 

 

 

whosmans  Mar 6, 2018
 #1
avatar+92895 
+1

When we have two tangents drawn to a circle as above....it sets up the following :

 

measure  XYZ   =  (1/2) (arc XSZ - arc XZ )  =

 

(1/2)  (  220  -  140 )  =

 

(1/ 2) ( 80)    =

 

40°

 

 

cool cool cool

CPhill  Mar 6, 2018

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