Unit 3 - TEST : Right Triangle Trigonometry

The _____________ of an acute angle in a right triangle is the ratio of the length of the adjacent leg to the length of the hypotenuse.

• Sine

• Cotangent

• Tangent

• Cosine

Calculate the  $\sin\ 33\degree.$  

• 0.649

• 0.839

• 0.545

• 0.491

Calculate the $\tan^{-1}\left(3.4\right).$  

•  $76.3\degree$  

•  $53.1\degree$  

•  $73.6\degree$  

•  $51.3\degree$  

If the  $\sin\ 27\degree\ =\ \cos\theta$  , what is the measure of angle  $\theta$  ?

•  $27\degree$  

•  $63\degree$  

•  $117\degree$  

•  $153\degree$  

What is the correct ratio for  $\tan\ B$  ?

•  $\frac{b}{a}$  

•  $\frac{a}{c}$  

•  $\frac{a}{b}$  

•  $\frac{b}{c}$  

What is the length of the missing side in the right triangle?

• 11

• 12

• 9

• 16

Given the right triangle ABC, solve for side a.

• 9.1 ft

• 10.4 ft

• 15.9 ft

• 7.9 ft

• $\frac{14}{50}=\frac{7}{25}$

• $\frac{14}{48}=\frac{7}{24}$

• $\frac{48}{50}=\frac{24}{25}$

• $\frac{48}{14}=\frac{24}{7}$

Use the diagram to find  $\cos\ x$  as a fraction in simplest form.

•  $\frac{7}{24}$  

•  $\frac{7}{25}$  

•  $\frac{24}{25}$  

•  $\frac{25}{7}$  

• 52.8 feet

• 53.6 feet

• 63.2 feet

• 43.1 feet