AB = AC = 32
SR = TR = 7
Solution:
Question 9:
<u>Tangent theorem of a circle:</u>
Lengths of tangents drawn from an same external point to a circle are equal.
In figure AB and AC are tangents drawn from same an external point A.
By tangent theorem of a circle,
⇒ AB = AC

Divide both side of the equation by x.


Divide by 2 on both side of the equation.


Substitute x = 4 in AB and AC.


Question 10:
By tangent theorem of a circle,
⇒ SR = TR

Multiply by 7 on both side of the equation, we get

Divide by y on both side of the equation, we get

Substitute y = 7 in SR and TR

