CHAPTER 4. TRIGONOMETRY- fåîÉêëÉ=`çí~åÖÉåí=cìåÅíáçå==
ó=~êÅÅçíñI=−∞≤ñ≤∞I=MK=<~êÅÅçíñ<π
===== =
Figure 69.
=- fåîÉêëÉ=pÉÅ~åí=cìåÅíáçå==
( ][ ) I K
O Oó ~êÅëÉÅ=ñI ñ I N NI I~êÅëÉÅñ MI
ππ
∪
π
= ∈−∞− ∪ ∞ ∈=
Figure 70.
dana p.
(Dana P.)
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