Explain why arccos (-1/2) does not equal 4pi/3 even though cos (4pi/3)=-1/2

Determine the solution for mc001-1.jpeg

Using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feet width: feet

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal