Chapter

AP

Highlights

EXERCISE

Type - 4
Question 1 :
 Find the 31st term of an A.P. whose 11th term is 38 and the 16th tern is 73.
Formulae used :

Distance Formula to find distance between two points (x1,y1) and (x2,y2) is :                                                D = √[(x2 – x1)2 + (y2 – y1)2 ]

Solution :
Sol. (i) Here x1 = 2, y1 = 3, x2 = 4 and y2 = 1
         ∴ The required distance
         
Class Work
Q.1.   Find the distance between the  following pairs of points:
      (i)   (2, 3), (4, 1)
     (ii)   (–5, 7), (–1, 3)
     (iii)  (a, b), (–a, –b)
Q.1.   Find the distance between the  following pairs of points:
      (i)   (2, 3), (4, 1)
     (ii)   (–5, 7), (–1, 3)
     (iii)  (a, b), (–a, –b)
Q.1.   Find the distance between the  following pairs of points:
      (i)   (2, 3), (4, 1)
     (ii)   (–5, 7), (–1, 3)
     (iii)  (a, b), (–a, –b)
Answer
(i) 5 m
(i) 5 m
(i) 5 m
Assignment
Q.1.   Find the distance between the  following pairs of points:
      (i)   (2, 3), (4, 1)
     (ii)   (–5, 7), (–1, 3)
     (iii)  (a, b), (–a, –b)
Answer
(i) 5 m
(i) 5 m
(i) 5 m
NCERT Questions
 Find the 31st term of an A.P. whose 11th term is 38 and the 16th tern is 73.
Answer
(i) 5 m
(i) 5 m
(i) 5 m
CBSE Questions
Q.1.   Find the distance between the  following pairs of points:
      (i)   (2, 3), (4, 1)
     (ii)   (–5, 7), (–1, 3)
     (iii)  (a, b), (–a, –b)
Answer
(i) 5 m
(i) 5 m
(i) 5 m
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