True or false? opposite angles of a parallelogram are equal.

Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c,with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)