MATHEMAGICA (ROUND 2)

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Across
  1. 3. No. of ways for arranging objects when not considered in order.
  2. 6. Vectors lying on the same plane are _______ vectors.
  3. 9. If a + bi = z, then a - bi is called as complex _______.
  4. 10. SI Unit for measuring the angle made at the center of a circle by an arc whose length is equal to the radius of the circle.
Down
  1. 1. Name of the symbol φ.
  2. 2. Unit for measuring angles of a circle.
  3. 4. A matrix is not invertible if it's determinant is _______.
  4. 5. For which geometric figure, equation x² + y² + z² = 1 holds?
  5. 7. The diagram made for representing complex number using co-ordinate axes.
  6. 8. Name of mathematician who gave the mathematical constant "e".