Circle Tangent Radius

The length of tangent from a point A at a distance of 5 cm from the centre of the circle is 4 cm. What is the radius of the circle?

• 2 cm

• 3 cm

• 4 cm

• 5 cm

From the figure from a point P which is at a distance 13 cm from the centre O of a circle of radius 5 cm , the pair of tangents AP and BP to the circle are drawn. Then the area of the quadrilateral PAOB is

In the figure, PA and PB are tangents to a circle with centre O. If \angle AOB=120\degree then what is \angle OPA

• 54

• 90

• 306

• 126

Knowing that line AF is a tangent, C is the center of the circle, and angle F is 29.0 degrees, what is the measure of angle ECD?

AD is tangent and AC is a diameter. Find the measure of arc AB.

• 36

• 90

• 72

• 54

Line ST is a tangent to the circle at point P. What is the measure of angle (x + y)?

• 79

• 80

• 86

• 90

Find the length of segment AC, assuming all segments that appear to be tangent are tangent.

If two tangents are drawn from an external point then they subtend equal angles at the centre

• TRUE

• FALSE