Maths crossword

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Across
  1. 3. cot A at 45 degree
  2. 6. sec A at 60 degree
  3. 7. Graph of quadratic polynomial
  4. 8. The fundamental theorem of _______
Down
  1. 1. 2x+3y=5 is a _______ equation
  2. 2. A number which cannot be changed
  3. 4. A line intersecting a circle in 2 points
  4. 5. tan A at 90 degree