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Please Help me @CPhill

 

What is the value of n?

Enter your answer in the box.

n = 

 

CD←→  is tangent to circle A at point B.

What is the measure of ∠ABD?

45º

60º

90º

180º

Guest Feb 21, 2018
 #1
avatar+88899 
+2

We are using the intersecting chord theorem again....so we have that

 

8(n + 8)  =  16(n + 2)      divide both sides by 8

 

n + 8  =  2(n + 2)       simplify

 

n + 8  =  2n + 4       subtract n, 4 from both sides

 

4  =  n

 

 

For the second one.....when a radius meets a tangent at the point of tangency, the angle formed is 90°.....so angle ABD  = 90°

 

 

cool cool cool

CPhill  Feb 21, 2018
 #2
avatar
0

Thank you So Much!! Your the best 

Guest Feb 21, 2018

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