Question

find the distance between (a cos 35,0) and (0,a cos 55)

Answer 1

using distance formula

distance between two points

(x1,y1) and (x2,y2) is given as

$\sqrt{(x2 {}^{2} - x1 {}^{2}) + (y2 {}^{2} - y1 {}^{2}) }$
so here
x1= acos35
y1=0
x2=0
y2=acos35

substituting values

$\sqrt{(0 - acos35) {}^{2} + (acos35 - 0) {}^{2}}$
= under root (2) cos35



thanks

UDIT:)