Oblicz :
a) 2*sin² 30⁰ * cos30⁰ - tg60⁰
a) 2*sin² 30⁰ * cos30⁰ - tg60⁰ = 2 * (1/2)² * √3/2 - √3 = 2 * 1/4 * √3/2 - √3 = 1/2 * √3/2 - √3 = √3/4 - √3 = 1/4 √3 - √3 = -3/4 * √3
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a) 2*sin² 30⁰ * cos30⁰ - tg60⁰ = 2 * (1/2)² * √3/2 - √3 = 2 * 1/4 * √3/2 - √3 = 1/2 * √3/2 - √3 = √3/4 - √3 = 1/4 √3 - √3 = -3/4 * √3