Across
- 3. In a right triangle, the ___ of an angle is the length of the adjacent side divided by the length of the hypotenuse
- 8. In ___, the three trigonometric ratios are sine,cosine, and tangent, and are used to calculate unknown lengths and angles of a right triangle
- 11. In a right triangle, the ___ of an angle is the length of the opposite side divided by the length of the hypotenuse.
- 12. The ___ of tan, sine,or cosine can be a fraction to give a more accurate answer, rather than an approximation.
- 13. A line that passes through the vertex of a triangle, meeting the other side and creating a right angle. A triangle has 3 of these
- 15. A helpful mnemonic for remembering trigonometric functions-sine, cosine, and tangent
- 17. The ___ of a polygon is half of its perimeter
Down
- 1. ___ is the study of triangles and the relationship of its sides and angles
- 2. the smallest angle between the terminal(ending) side and the x-axis.(Hint: always less than or equal to 90 degrees)
- 4. a/sin A = b/sin B = c/sin C;rule used to find unknown angles
- 5. A ___ is a closed figure/shape with three sides
- 6. Equations that are always true for right angled triangles
- 7. The ___ comes from the Pythagorean theorem, with the first theorem stating that the right triangles formed by a unit circle will have a hypotenuse of 1.
- 9. Rule for finding the third side of a triangle when we know two sides and the angle between them, and to find the angles of a triangle when we know all three sides; c^2 = a^2 + b^2 − 2ab cos(C)
- 10. A measure for angles, with 360 ___ being the full rotation
- 14. In a right triangle, the ___ of one angle is the length of the opposite side divided by the length of the adjacent side.
- 16. The four sections on a coordinate plane