What is the rectangular form of 17(cos(315°) + isin(315°))?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a