Question

In traingle abc the lengths of the two larger sides are 10and 9units respectively if the angles are in


a.P then the length of the third side can be

Answer 1

let a1= 10 units

and, a2=9

therefore d=a2-a1

=>10-9

d=-1

an= a+(n-1)d

a3= 10+(3-1)-1

=> 10+(2)-1

=> 10-2

=> 8

Therefore the third side can be 8units