How to solev such questions? In a circle PA is tangent of length 20 units. CD and XY are chords of circle. If XY = 8 and PY = 12 then find...

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How to solev such questions?

In a circle PA is tangent of length 20 units. CD and XY are chords of circle. If XY = 8 and PY = 12 then find out the measure of PD if CD = 10

a 12

b 16

c 24

d Cannot be determined

1 Replies

  • Replied 1 year ago

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    Here we can apply the formula of tangent when PA2 = PC*PD = PX*PY
    But here we don’t know whether the near point to P on circle is C or D and same way for XY chord
    (It can be PC + CD = PD or PD + CD = PC)
    So, the answer is cannot be determined

Tangents · CATKing Forum

How to solev such questions? In a circle PA is tangent of length 20 units. CD and XY are chords of circle. If XY = 8 and PY = 12 then find...

Body

How to solev such questions?

In a circle PA is tangent of length 20 units. CD and XY are chords of circle. If XY = 8 and PY = 12 then find out the measure of PD if CD = 10

a 12

b 16

c 24

d Cannot be determined

1 Replies

  • Replied 1 year ago

    Report

    Here we can apply the formula of tangent when PA2 = PC*PD = PX*PY
    But here we don’t know whether the near point to P on circle is C or D and same way for XY chord
    (It can be PC + CD = PD or PD + CD = PC)
    So, the answer is cannot be determined