Answer:
 24/25
Explanation:
      
     here's your solution
   => perpendicular = 24
  => base = 7
  => hypotenuse = ?
  => firstly we need to find hypotenuse 
 =>  h^2 = p^2 + b^2
  => h^2 = 24^2 + 7^2
  => h^2 = 576 + 49
  => h^2 = 625
  => h = √625
 => h = 25
now sin thita = perpendicular/hypotenuse
    =>  24/25
hope it helps