Right Triangle Trig Application

The bottom of a 13-foot straight ladder is set into the ground 5 feet away from a wall. When the top of the ladder is leaned against the wall, what is the distance above the ground it will reach?

• 12 feet

• 13.9 feet

A building 62 feet tall casts a shadow 21 meters long.  At what angle is the sun shining on the building?

• 19.80

• 18.71

• 70.20

• 71.29

Solve the right triangle.

• <B = 39^o, AB = 11.58, AC = 7.29

• <B = 39^o, AB = 7.29, AC = 11.58

• <B = 129^o, AB = 11.58, AC = 7.29

• <B = 129^o, AB = 7.29, AC = 11.58

Solve the right triangle.

• <A = 34^o, <C = 56^o, AC = 5.59

• <A = 56^o, <C = 34^o, AC = 5.59

• <A = 34^o, <C = 56^o, AC = 9.01

• <A = 56^o, <C = 34^o, AC = 9.01

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Find the area?

• 15 in²

• 30 in²

• 15 in

•  30 in

Choose the Law of Sine you would use to solve the problem.

Which expression below will find the Area of this triangle?

Solve for the missing distance

• 18.9 meters

• 19.5 meters

• 47.2 meters

• 27.5 meters

A yacht is anchored 90 feet offshore from the base of a lighthouse.  The angle of elevation from the boat to the top of the lighthouse is 26 degrees.  The distance between the yacht and the top of the lighthouse is about 100 feet.  Which of these is nearest to the height of the lighthouse? 

• 23 feet

• 43 feet 

• 110 feet 

• 135 feet