Page 187 - 1300 Math Formulas

CHAPTER 7. ANALYTIC GEOMETRY

692. m~ê~ãÉíêáÅ=cçêã==
 = ññ N + Åçëí α

 ó = ó N + Åçëí β I==

 ò = ò N + Åçëí γ
ïÜÉêÉ=íÜÉ=éçáåí= ( Iñm N N ó N ò I N )=äáÉë=çå=íÜÉ=ëíê~áÖÜí=äáåÉI=
β
γ
Åçë α I=Åçë I=Åçë =~êÉ=íÜÉ=ÇáêÉÅíáçå=ÅçëáåÉë=çÑ=íÜÉ=ÇáêÉÅíáçå=
îÉÅíçê=çÑ=íÜÉ=äáåÉI=íÜÉ=é~ê~ãÉíÉê=í=áë=~åó=êÉ~ä=åìãÄÉêK==
=

===== =
=
Figure 138.
=
693. ^åÖäÉ=_ÉíïÉÉå=qïç=píê~áÖÜí=iáåÉë=
r r ~ + Ä +
ë ⋅
Åçë =ϕ r ë N r O = ~ N O Ä N O Å N Å O =
ë ë ⋅ ~ + Ä + Å ⋅ ~ + Ä + O
O
O
O
O
O
N O N N N O O Å O
=

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