ind the distance between the points:(0) A(9, 3) and B(15, 11)(i) A-6,-

1.	ind the distance between the points:(0) A(9, 3) and B(15, 11)(i) A-6,-4) and B(9,-12) (iv) A(1, -3) and B(4, -6)(ii) A(7,-4) and B(-5,1)a+b,a-b)and a-b, a+b)(vi) P(asin o., acos a) and Q(acos a,- asin a)
Answer» Distance between pointsP(a+b, a-b) and Q(a-b, a+b) D = sqrt[(a-b-a-b)^2 + (a+b-a+b)] = sqrt[(-2b)^2 + (2b)^2] = sqrt(4b^2 + 4b^2) = sqrt(8b)^2 = 2sqrt(2)b

ind the distance between the points:(0) A(9, 3) and B(15, 11)(i) A-6,-4) and B(9,-12) (iv) A(1, -3) and B(4, -6)(ii) A(7,-4) and B(-5,1)a+b,a-b)and a-b, a+b)(vi) P(asin o., acos a) and Q(acos a,- asin a)

Answer»

Distance between pointsP(a+b, a-b) and Q(a-b, a+b)

D = sqrt[(a-b-a-b)^2 + (a+b-a+b)] = sqrt[(-2b)^2 + (2b)^2] = sqrt(4b^2 + 4b^2) = sqrt(8b)^2 = 2sqrt(2)b