2010010703 | math4u.vsb.cz

SubArea:

Trigonometric equations and inequalities

Level:

Project ID:

2010010703

Source Problem:

Accepted:

0

Clonable:

1

Easy:

0

Identify the equation which arises from the following equation using an optimal substitution.

2 \sin^{2} x - 5 \cos x + 1 = 0

2 t^{2} + 5 t - 3 = 0

2 t^{2} - 5 t + 1 = 0

2 t^{2} + 5 t - 4 = 0

2 t^{2} - 5 t + 2 = 0