Find the distances between the following pairs of points.
`(a cos alpha, a sin alpha) and (a cos beta, a sin beta)`.

1. Find the distance between the following points.(i) (a cos alpha, a sin alpha) and (a.cos beta, a sin beta)

Find the distance between the following pair of points: (a sin alpha,-b cos alpha) and (-a cos alpha,b sin alpha)( ii) (a,0) and (0,b)

Find the equation of the straight lines passing through the following pair of point: (a cos alpha,a sin alpha)and(a cos beta,a sin beta)

The distance between the points (a cos alpha,a sin alpha) and (a cos beta,a sin beta) where a>0

The distance between the points (a cos alpha,a sin alpha) and (a cos beta,a sin beta) where a> 0

(sinalpha cos beta+cos alpha sin beta)^2+(cos alpha cos beta-sin alpha sin beta)^2=1