2010009803 | math4u.vsb.cz

SubArea:

Trigonometric equations and inequalities

Level:

Project ID:

2010009803

Source Problem:

Accepted:

0

Clonable:

1

Easy:

1

Which of the following equations has exactly two solutions in the interval

[- \frac{π}{2}; \frac{π}{2}]

?

3 \cos x - 2 = 0

3 \sin x - 2 = 0

2 \cos x - 3 = 0

3 \cos x + 2 = 0