Question

trigonometry vocabulary quiz
name:
date:
directions: using the word bank, write the correct vocabulary word.
word bank
cosine • hypotenuse • adjacent side • opposite side • sine • tangent • trig ratio • trigonometry • 90 degree angle • complementary angle • similar triangles • angle of elevation • angle of depression
1.
right triangle shown. the longest side across from the right angle is highlighted.
answer:
2.
right triangle shown. the side across from the marked angle θ is highlighted.
answer:
3.
right triangle shown. the side next to angle θ (not the hypotenuse) is highlighted.
answer:
4.
two angles that add up to 90° are shown.
answer:
5.
angle labeled 90° at the corner of a triangle.
answer:
6.
** person on the ground looking up at the top of a building.
answer:
7.
** person on a cliff looking down at an object below.
answer:
8.
$sin \theta = \text{opposite} / \text{hypotenuse}$ is shown next to a triangle.
answer:
9.
the study of triangles and angles is illustrated with symbols.
answer:
10.
two triangles with the same shape but different sizes are shown.
answer:

Explanation:

1. Identifies the longest side of a right triangle opposite the right angle.
2. Identifies the side across from a marked acute angle in a right triangle.
3. Identifies the side next to a marked acute angle (not the hypotenuse) in a right triangle.
4. Identifies two angles whose sum is 90 degrees.
5. Identifies the right angle in a right triangle.
6. Identifies the angle formed when looking upward from a horizontal line.
7. Identifies the angle formed when looking downward from a horizontal line.
8. Identifies the trigonometric ratio of opposite over hypotenuse.
9. Identifies the field focused on triangle and angle relationships.
10. Identifies triangles with matching angles and proportional sides.

Answer:

1. hypotenuse
2. opposite side
3. adjacent side
4. complementary angle
5. 90 degree angle
6. angle of elevation
7. angle of depression
8. sine
9. trigonometry
10. similar triangles