liczba-cos3-50circsin2-50circcdotcos-50circ-jest-rowna

$\cos50^\circ$\cos50^\circ

$\sin 50^\circ$\sin 50^\circ

$\sin50^\circ \cdot \cos50^\circ$\sin50^\circ \cdot \cos50^\circ

$\tg 50^\circ$\tg 50^\circ