wartosc-wyrazenia-displaystyle-cos-frac11pi6-cdot-tg-frac7pi4-jest-rowna

$\displaystyle -\dfrac{\sqrt{3}}{2}$\displaystyle -\dfrac{\sqrt{3}}{2}

$\displaystyle \dfrac{\sqrt{3}}{2}$\displaystyle \dfrac{\sqrt{3}}{2}

$\displaystyle -\dfrac{1}{2}$\displaystyle -\dfrac{1}{2}

$\displaystyle \dfrac{1}{2}$\displaystyle \dfrac{1}{2}