TRIGONOMETRIC FUNCTIONS OOC Relationship between the sines and cosines of complementary... Complete the following. Part 1: In A TUV, LT and Z U are (Choose one) X 5 . ? Part 2: Use 1, u, and v to fill in the blanks. Make sure to use the appropriate upper-case or lower-case letters. sin T= cos T= cos U= sin U= Part 3: Select all of the true statements. O sin T= sin U O cos T = sin U O sin T= cos U O cos T= cos U O None of the above is true. Part 4: Fill in the blank. cos (490) = sin ()