please find the distance between the two co-ordinats (a Sin alpha , -b cos alpha) and (-a cos alpha , - Maths - Coordinate Geometry

Question

please find the distance between the two co-ordinats (a Sin
alpha , -b cos alpha) and (-a cos alpha , b cos alpha)

S. Usha Rani · Accepted Answer

A= (a sinα, -b cosα) =(x1 , y1)B=(-a cosα, b
cosα) =(x2 ,
y2)AB=(x2-x1)2+(y2-y1)2=(-acosα-asinα)2+(bcosα+bcosα)2=a2(cos2α+sin2α
+ 2cosα sinα)+4b2cos2α=a2(1 + 2cosα
sinα)+4b2cos2α

please find the distance between the two co-ordinats (a Sin alpha , -b cos alpha) and (-a cos alpha , b cos alpha)