The distance between the points (a, b) and (– a, – b) is:
a2 + b2
√(a2 + b2)
0
2√(a2 + b2)
Let A(a,b) and B(-a,-b) be the two points and 'd' be the distance between them.
By using distance formula, we get
d = √(a−(−a))2+(b−(−b))2
d = √(2a)2+(2b)2
d = 2√a2+b2
The distance between the points A(a cos 20∘ + b sin20∘, 0) and B(0, a sin20∘ - b cos20∘) is: