law of cosine

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Across
  1. 2. B, C: Often used to represent the angles of a triangle (1, 1, 1 letters)
  2. 4. A mathematical expression (8 letters)
  3. 6. One of the three components of a triangle (4 letters)
  4. 8. Abbreviation for cosine (3 letters)
  5. 11. Raised to the power of two (7 letters)
Down
  1. 1. A polygon with three sides (8 letters)
  2. 3. Trigonometric function used in the Law of Cosines (8 letters)
  3. 5. B, C: Often used to represent the sides of a triangle (1, 1, 1 letters)
  4. 7. This type of triangle is where the law of cosines is particularly useful (9 letters)
  5. 9. Measurement in degrees or radians (6 letters)
  6. 10. Mathematical principle (4 letters)