numbers 41 and 45. I don't know how to solve these problems.

41. Use a rotation matrix to rotate the vector 2 counterclock. wise by the angle 7 /3. 42. Use a rotation matrix to rotate the vector counterclock- wise by the angle x/6. 43. Use a rotation matrix to rotate the vector clockwise by the angle 45. 44. Use a rotation matrix to rotate the vector 3 counterclock- wise by the angle 45. 45. Use a rotation matrix to rotate the vector clockwise by the angle m /3