1103061406 | math4u.vsb.cz

SubArea:

Metric properties

Level:

Project ID:

1103061406

Accepted:

1

Clonable:

0

Easy:

0

The rectangular box

A B C D E F G H

has sides of lengths

| A B | = 6 cm

,

| B C | = 4 cm

,

| A E | = 8 cm

. Find the angle between the planes

A B C

and

E F C

(see the picture). Round the result to two decimal places.

{63.43}^{\circ}

{26.57}^{\circ}

45^{\circ}

{56.2}^{\circ}