Question

Find the value of X

Answer 1

x = 14

Explanation:

• By tangent secant theorem

• 
  `x^2 = 7(7+21)`

• 
  `\implies x^2 = 7(28)`

• 
  `\implies x ^2=196`

• 
  `\implies x=\pm√(196)`

• 
  `\implies x=\pm 14`

• x can not be negative

• 
  `\implies x=14`