Question

Is line AB tangent to the circle? Why or why not? (The diagram is not to scale.)

https://nnds-li.brainhoney.com/Resource/19791663,8AD/Assets/assessmentimages/lesson1_qu2.gif

no; 122 + 3.52 ≠ 12. 52
no; 12 + 3.5 ≠ 12. 5
yes; 122 + 3.52 = 12. 52
yes; 12 + 3.5 > 12. 5
@michele_laino

Answer 1

@welshfella

Answer 2

IF AB is a tangent to the circle the radius BO will make a right angle at B

so check if triangle ABO is right angled by applying the pythagoras theorem.

Answer 3

what is that

Answer 4

@welshfella

Answer 5

for a right angled triangle

12.5^2 will equal 12^2 + 3.5^2

if that is the case then AB is a tangent to the circle.

Answer 6

that is true

Answer 7

so would the answer be c

Answer 8

yes 12.5^2 = 156.25
12^2 = 144
3.5^2 = 12.25

Answer 9

so it would be c right?

Answer 10

yes c is correct

Answer 11

u got it