Question:
Vyberte všechny výrazy, které mají zápornou hodnotu.
Project ID:
7400220110
Answer 1:
$\sin 10^{\circ}-\sin 20^{\circ}$
Answer 1 Correct:
1
Answer 2:
$\sin 40^{\circ}-\mathrm{tg}\, 40^{\circ}$
Answer 2 Correct:
1
Answer 3:
$\cos 10^{\circ}-\cos 20^{\circ}$
Answer 3 Correct:
0
Answer 4:
$\mathrm{tg}\, 10^{\circ}-\mathrm{tg}\, 20^{\circ}$
Answer 4 Correct:
1
Answer 5:
$\cos 30^{\circ}-\sin 30^{\circ}$
Answer 5 Correct:
0
Answer 6:
$\sin 50^{\circ}-\cos 50^{\circ}$
Answer 6 Correct:
0
Answer 7:
$\sin 40^{\circ}-\cos 50^{\circ}$
Answer 7 Correct:
0
Answer 8:
$2\sin^2 30^{\circ}-2\cos^2 30^{\circ}$
Answer 8 Correct:
1