Across
- 4. angle an angle greater than 90° but less than 180°
- 6. tan -1
- 11. cos-1
- 12. the side next to the angle we know
- 14. the study of the relationships between sides and angles in triangles.
- 17. angle an angle grater than 180° but less than 360°
- 18. sine function
Down
- 1. tool that is used to measure the angle of elevation.
- 2. the longest side of a right-angled triangle, opposite the right angle.
- 3. cosine function
- 5. having all sides of equal length
- 7. angle a 90° angles
- 8. sin-1
- 9. angle an angle less than 90° but greater than 0°
- 10. optical instrument for measuring angles between designated visible points in the horizontal and vertical planes.
- 13. theorem In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides.
- 15. the side opposite the angel we know
- 16. tangent function