Angel Food Cookies

1 cup butter or margarine
1/2 cup brown sugar
1/2 cup white sugar
1 egg
1 tsp. vanilla
2 cp flour, sifted
1 tsp. cream of tartar
1 tsp. baking soda
1/2 tsp. salt
1 cup coconut

Cream the butter and sugars. Add vanilla and egg and beat well. Add remaining ingredients and mix well. Roll dough into balls using 1 teaspoon per cookie. Dip in water, then in granulated sugar. Bake on ungreased cookie sheet for 8 to 10 minutes at 350 degrees.