Question:
A building casts a shadow $19\,\mathrm{ m}$ long when the sun's rays fall on the ground at an angle of $60^{\circ}$. From the given expressions, select all that represent the height of the building.
Project ID:
7400320113
Answer 1:
$19\cdot \frac{\sin 60^{\circ}}{\cos 60^{\circ}}$
Answer 1 Correct:
1
Answer 2:
$19\cdot \sin 30^{\circ}$
Answer 2 Correct:
0
Answer 3:
$19\cdot \mathrm{cotg}\, 30^{\circ}$
Answer 3 Correct:
1
Answer 4:
$\frac{19}{ \mathrm{tg}\, 30^{\circ}}$
Answer 4 Correct:
1
Answer 5:
$19\cdot \mathrm{tg}\, 60^{\circ}$
Answer 5 Correct:
1
Answer 6:
$19\cdot \cos 60^{\circ}$
Answer 6 Correct:
0
Answer 7 Correct:
0
Answer 8 Correct:
0