4 Using your calculator insert the following function j(x) = cos2x Complete the following table:
-180°=
-135°=
-90°=
-45°=
0°=
45°=
90°=
135°=
180°=​

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

irrational, cannot

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,