Question

find the distance from origin to the point (1,2,3)​

Answer 1

Step-by-step explanation:

P(1,2,3), Plane :x−y+z

F is foot of perpendicular form P to plane and I is image,then PF=FI

∴ If (x,y,z)=(r+1,−r+2,r+3) are foot of perpendicular.

⇒(r+1)−(−r+2)+r+3=5⇒r=1

∴F=(2,1,4)

∴I=(3,0,5)

∴ distance of I from origin =

√3²+√0²+√5² = 34

I HOPE THIS ANSWER WILL BE HELPFUL FOR YOU AND MARK ME AS BRAINLIEST ANSWER BUDDY.