Ab ← → is tangent to circle o at point a. if m∠aob = 55°, what is m∠abo ?

Step-by-step explanation:

Given AB is a tangent to the circle O and touch the circle at point A.

We know that tangent is a line which touches the circle only at one point .

We know that the radius of circle is perpendicular to the tangent.

In the figure OA is radius of given circle

AB is a tangent line

Radius OA is perpendicular to the tangent AB.

Therefore,

We know that sum of angles of a triangle is .

By sum of angle of triangle property

Therefore,in triangle OAB

OAB+ ABO+ AOB=

By angle sum of triangle property

90+55+

the answer is 489

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation