G11 Valentine

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Across
  1. 2. Value of cos x if sin x = −3/2 in quadrant IV
  2. 4. A square matrix with ones on the diagonal
  3. 5. Value of x − y from the given matrices
  4. 7. The standard form of 2 − 16i
  5. 8. Value of cos120°cos50° − sin120°sin50°
  6. 9. The conjugate of 5 + i
Down
  1. 1. The modulus of z = 2 − 5i
  2. 3. Type of matrix representing a linear system
  3. 6. The reciprocal of tangent
  4. 7. Determinant of the given 2×2 matrix