Question:
Napnutý špagát dlhý $20\,\mathrm{m}$, na ktorom je pripevnený šarkan, zviera uhol $70°$ s vodorovnou rovinou. Označte všetky výrazy predstavujúce výšku šarkana nad zemou.
Project ID:
7400220113
Answer 1:
$20\cdot \mathrm{tg}\, 20 ^{\circ}$
Answer 1 Correct:
0
Answer 2:
$20\cdot \mathrm{tg}\, 70 ^{\circ}$
Answer 2 Correct:
0
Answer 3:
$20\cdot \sin 70 ^{\circ}$
Answer 3 Correct:
1
Answer 4:
$20\cdot \cos 20 ^{\circ}$
Answer 4 Correct:
1
Answer 5:
$20^2 − (20\cdot \cos 70 ^{\circ})^2$
Answer 5 Correct:
0
Answer 6:
$20\cdot \mathrm{tg}\, 70 ^{\circ}\cdot \cos 70 ^{\circ}$
Answer 6 Correct:
1
Answer 7 Correct:
0
Answer 8 Correct:
0