Help me please!

Question

http://s1039.photobucket.com/user/dani_doll98/media/IMG_7979.zpsthqno5ap.jpg.html?o=2

http://s1039.photobucket.com/user/dani_doll98/media/IMG_7978_zpsbnmgzi3z.jpg.html?sort=3&o=3

Thank you so much

the first link will say the image was removed.. its not. just keep clicking to the left and it will say question 2!

Answer 1

(1)

Step 1:

From the figure:

The points are , and .

.

.

Since both and lie in the plane, their cross product is orthogonal to the plane.

Find the cross product of and .

.

Step 2:

The equation of the plane passes through the point and normal vector is .

The plane passes through the point and normal vector .

.

The equation of the plane is .

Solution:

The equation of the plane is .

Answer 2

(2)

The height of the person is .

The shadow of the person is .

The distance between person to the flagpole is .

Find height of the flag pole.

Consider the height of the flag pole is .

Draw the related diagram:

From the diagram:

In , .

In , .

By similar triangle property:

.

The height of the flag pole is .