Question

prove that the length of the perpendicular from the origin to the straight line joining the two points having coordinates ( a cos alpha, a sin alpha) and (a cos beta, a sin beta) is
a cos { ( alpha + beta)/2}.

Answer 1

First find equation of the line passing through ( a cos alpha, a sin alpha) and (a cos beta, a sin beta)

Answer 2

vat after that

Answer 3

may i know ur calculated eqution for those 2 given points\[(a \cos \alpha , a \sin \alpha) , (a \cos \beta ,a \sin \beta)\]

Answer 4

(y - asinα)=[(asinβ-asinα)/(acosβ-acosα)]*(x-acosα)

Answer 5

did u solve ur problem

Answer 6

if u need more help then plz ask

Answer 7

yes i need help