TRIGONOMETRIC CROSS PUZZLE

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Across
  1. 3. RECIPROCAL OF SINX
  2. 5. PERPENDICULAR SIDE OF A TRIANGLE
  3. 7. DERIVATIVE OF SINX
  4. 8. RECIPROCAL OF COSX
Down
  1. 1. LONGEST SIDE OF A TRIANGLE
  2. 2. DERIVATIVE OF X
  3. 3. ADJACENT SIDE BY OPPOSITE SIDE
  4. 4. SINX DIVIDED BY COSX
  5. 6. INTEGRAL OF 1/X