Question

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plz solve my question ​

Answer 1

Answer:

PA = 4 cm.

Step-by-step explanation:

By the tangent - secant theorem,

PA . PB = PT² = 6² = 36

=> PA ( PA + AB ) = 36

=> PA ( PA + 5 ) = 36

=> PA² + 5 PA - 36 = 0

=> ( PA + 9 ) ( PA - 4 ) = 0

=> PA = -9 or PA = 4.

Since PA is positive, we conclude that PA = 4.

Answer 2

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