Question

7. Find the distance between: (1) (a+b, a-b) and (a-b, a+b) (2) (cosa,
sin a) and (-cos a, sin a).​

Answer 1

Answer:

1.) 2b×root2

2.) a×root2

Step-by-step explanation:

Attached in the photo (btw I am in 9th and can solve 10th questions easily )

Answer 2

Answer:

1) distance=

√(a-b-a+b)²+(a+b-a+b)²

√(2a)²+(2b)²

√(4a²+4b²)

√4(a²+b²)

2√(a²+b²)

2) distance

√(-cosa-cosa)+(sina-sina)²

√(-2cosa)²+0

√4cosa²

2cosa

hope its helpful