Math 20-3 - Right Angle Trigonometry Review Quiz

What is the ratio of  $COS\ \theta$  ?

•  $\frac{opp}{hyp}$  

•  $\frac{hyp}{adj}$  

•  $\frac{adj}{hyp}$  

•  $\frac{opp}{adj}$  

What is the ratio of  $SIN\ \theta$  ?

•  $\frac{adj}{hyp}$  

•  $\frac{opp}{adj}$  

•  $\frac{opp}{hyp}$  

•  $\frac{adj}{opp}$  

What is the ratio of  $TAN\ \theta$  ?

•  $\frac{opp}{adj}$  

•  $\frac{adj}{hyp}$  

•  $\frac{adj}{opp}$  

•  $\frac{opp}{hyp}$  

In a right triangle, relative to one of the acute angles ( $\theta$ ), the adjacent side measures 25 m and the hypotenuse measures 43 m. What is the measure of angle  $\theta$  to the nearest whole degree?

•  $30\degree$  

•  $54\degree$  

•  $36\degree$  

•  $60\degree$  

In a right triangle, if you ONLY know the measure of one of the acute angles, which of the following statements is true?

• You can use Pythagorean Theorem to solve for the measures of the sides.

• You can determine the measure of the other acute angle by using the Triangle Sum Theorem.

• You can use any of the three primary trigonometric ratios to determine the measure of the other acute angle.

• You can use any of the three primary trigonometric ratios to determine the measures of all three sides of the triangle.

Which of the following descriptions best describes what is meant by an angle of elevation?

• The angle from a horizontal line of vision upward to the line of sight of some object above the horizontal.

• The angle from a horizontal line of vision downward to the line of sight of some object below the horizontal.

• An angle that when added to another angle adds up to $180\degree$ .

• An angle that when added to another angle adds up to $90\degree$ .

Using the given diagram, what is the measure of $\angle B$  to the nearest whole degree? (DO NOT include degrees/words in your response. Just the number.)

Using the given diagram, determine the measure of the hypotenuse to the nearest whole number. (DO NOT include degrees/words in your response. Just the number.)

Using the given diagram, determine the measure of $\overline{DF}$  to the nearest whole number. 

An apple tree stands 5.6 m tall. An apple has fallen from the tree and rolled across a horizontal plane of grass. If the angle of elevation from where the apple sits to the top of the tree measures  $61\degree$  , how far away is the apple from the tree to the nearest tenth of a metre? (DO NOT include units in your answer. Just record the number.)