In the given figure (circle), `P T=5,P D=7a n dP A=2,` then the value of `P B-P C=?`

Explanation

As given in figure [Fig.1]
`T_(3)=2T_(1)=2(2T_(2))=4T_(2)` and `T_(4)=2T_(2)`
`thereforeT=T_(3)+T_(4)=4T_(2)+2T_(2)=6T_(2)=6xx(50)/(2)=150N`