Question:
Vyberte všechny výrazy, jejichž hodnota je rovna $-\frac{\sqrt3}{2}$:
Project ID:
7400220039
Answer 1:
$$ -\cos\,\frac{\pi}{2}+\sin\left(-\frac{2\pi}{3}\right) $$
Answer 1 Correct:
1
Answer 2:
$$ \cos\,\frac{11\pi}{6}-2\sin\,\frac{7\pi}{3} $$
Answer 2 Correct:
1
Answer 3:
$$ 2\sin\,\frac{2\pi}{3}-\cos\,\frac{7\pi}{6} $$
Answer 3 Correct:
0
Answer 4:
$$ 2\sin\,\frac{2\pi}{3}\cos\,\frac{2\pi}{3} $$
Answer 4 Correct:
1
Answer 5:
$$ \mathrm{tg}\,\frac{\pi}{3} \cdot \sin\,\frac{5\pi}{3} $$
Answer 5 Correct:
0
Answer 6:
$$- \sin^2\,\frac{\pi}{4}\cdot \mathrm{cotg}\,\frac{7\pi}{6} $$
Answer 6 Correct:
1
Answer 7:
$$ \mathrm{tg}\left(-\frac{\pi}{3}\right) \cdot \sin\,\frac{5\pi}{6} $$
Answer 7 Correct:
1
Answer 8:
$$ \mathrm{cotg}\left(-\frac{\pi}{4}\right) \cdot \sin\left(-\frac{\pi}{4}\right) $$
Answer 8 Correct:
0