Oblicz :
a) 2*sin² 30⁰ * cos30⁰ - tg60⁰
2*sin²30°*cos30°-tg60°=2*1/2²*√3/2-√3=2*1/4*√3/2-√3=1/2*√3/2-√3=
√3/4 - √3=(√3-4√3)/4=( - 3√3)/4
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2*sin²30°*cos30°-tg60°=2*1/2²*√3/2-√3=2*1/4*√3/2-√3=1/2*√3/2-√3=
√3/4 - √3=(√3-4√3)/4=( - 3√3)/4