Level:
Project ID:
2010009803
Source Problem:
Accepted:
0
Clonable:
1
Easy:
1
Which of the following equations has exactly two solutions in the interval \( \left[ -\frac{\pi}2;\frac{\pi}{2}\right] \)?
\( 3\cos x - 2 = 0 \)
\( 3\sin x - 2 = 0 \)
\( 2\cos x - 3 = 0 \)
\( 3\cos x + 2 = 0 \)