1 - masala. ABC to`g`ri burchakli uchburchakda ÐA=90o, |BC|=15 sm va |AB|=9 sm bo`lsa, |AC| - tomonining uzunligi topilsin (1-chizma).
Berilgan: DABC , ÐA=90o, |BC|=15 sm va |AB|=9 sm.
Topish kerak: |AC| - ?
Yechish. Pifagor teoramesiga ko`ra: |BC|2=|AB|2+|AC|2
Þ|AC| = ± Þ |AC|= |AC|=12 sm.
2-masala. DABC da ÐA=30o, ÐB=90o, |AB|=2 sm, |AC|= sm bo`lsa, |BC| - ning uzunligini toping (2-chizma).
Berilgan: DABC da ÐA=30o, ÐB=90o, |AB|=2 sm, |AC|= sm
Topish kerak: BC - ?
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