9000151301 | math4u.vsb.cz

SubArea:

Level:

Project ID:

9000151301

Source Problem:

Accepted:

1

Clonable:

1

Easy:

0

Find the angle

φ

between the lines

3 x - 7 = 0

and

x + y + 13 = 0

.

45^{\circ}

90^{\circ}

60^{\circ}

30^{\circ}