CHAPTER 1 Section 1.1 Solutions -------------------------------------------------------------------------------- 1. Solve for x: 1 2 360 x =  360 2 , so that 180 . = = x x   2. Solve for x: 1 4 360 x =  360 4 , so that 90 . = = x x   3. Solve for x: 1 3 360 x − =  360 3 , so that 120 . = − x x = −   (Note: The angle has a negative measure since it is a clockwise rotation.) 4. Solve for x: 2 3 360 x − =  720 2(360 ) 3 , so that 240 . = =− =− x x    (Note: The angle has a negative measure since it is a clockwise rotation.) 5. Solve for x: 5 6 360 x =  1800 5(360 ) 6 , so that 300 . == = x x    6. Solve for x: 7 12 360 x =  2520 7(360 ) 12 , so that 210 . == = x x    7. Solve for x: 4 5 360 x − =  1440 4(360 ) 5 , so that 288 . x x = =− = −    (Note: The angle has a negative measure since it is a clockwise rotation.) 8. Solve for x: 5 9 360 x − =  1800 5(360 ) 9 , so that 200 . x x = =− = −    (Note: The angle has a negative measure since it is a clockwise rotation.) 9. a) complement: 90 18 72 − =   b) supplement: 180 18 162 − =   10. a) complement: 90 39 51 − =   b) supplement: 180 39 141 − =   11. a) complement: 90 42 48 − =   b) supplement: 180 42 138 − =   12. a) complement: 90 57 33 − =   b) supplement: 180 57 123 − =  