Odpowiedzi

2009-11-02T18:28:41+01:00
Sin45⁰ = 1/√2
tg60⁰ = √3
( 3 razy sin45⁰ + tg60⁰)(3 razy sin45⁰ - tg60⁰) =
= (3√2 + √3 )( 3√2 - √3) = ( 3√2)² - (√3)² = 18 - 3 = 15
5 2 5