En un triángulo, los lados \( a=8 \mathrm{y} b=6, \mathrm{y} \) el ángulo entre ellos es \( 60^{\circ} \). Usa el Teorema del Coseno para calcular el tercer lado \( 0^{\circ} c^{\circ} \).

23) The farmer in the previous problem has a neighber who has a field 325 ft by 420 ft . His neighbor wants to increase the size of his field by \( 20 \% \) by cultivating a band of uniform width around the outside of his lot. How wide a band should his neighbor cultivate?

The diagram shows a scale drawing of a lacrosse field. The diagram is 5 1/2 inches long and 3 inches wide. If 1 inch represents 20 yards, what is the area of the field?

How do you rotate 270 degrees counterclockwise about the origin? What is the rule for rotating 270 degrees about the origin? 

Равные отрезки \( A B \) и \( D C \) лежат на параллельных прямых, а отрезки \( A C \) и \( B D \) пересекаютоя в точке \( M \). Найди \( M C \), если \( A C=56 \).

A rectangular field 225 ft by 120 ft has a ring of uniform with cut around the outside edge. The ring leaves \( 65 \% \) of the field uncut in the center. What is the width of the ring?