Question

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Answer 1

Odpowiedź:

z.8

1)   4² + 7² = x²

x² = 16 + 49 = 65

x = [tex]\sqrt{65}[/tex]

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2) 4² + y² = ( 4 [tex]\sqrt{10}[/tex])²

y² + 16 = 16*10

y² = 160 - 16 = 144

y = [tex]\sqrt{144} = 12[/tex]

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3) z² + 4² = 9²

z² = 81 - 16 = 65

z = [tex]\sqrt{65}[/tex]

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z.9

1 )  a² + 9² = 15²

a² = 225 - 81 = 144

a = [tex]\sqrt{144} = 12[/tex]

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2)  b² = ( √7)² + ( 2 √5 )²

b² = 7 + 4*5 = 27 = 9*3

b = [tex]\sqrt{9*3} = 3\sqrt{3}[/tex]

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