Key Terms
Find the missing Angle
Find the Missing Side
Trig Applications
Trig functions
100
The ratio of the opposite side to the hypotenuse.
What is Sine?
100
Find theta. 

Adjacent = 12 Hypotenuse = 13

Round to nearest tenth.

What is 22.6 degrees?
100
Find the missing Side: 

Theta = 37, Adjacent = 11 m, Hypotenuse = ?

Round to nearest tenth.

What is 13.8 m?
100
A 10-foot ladder is leaning against a wall. If the bottom of the ladder is 6 feet away from the base of the wall, what is the angle of elevation of the base of the ladder? Round to the nearest tenth.
What is 53.1 degrees?
100
In triangle ABC, angle A is a right angle. 

If tan B = 8/9. Find cos B.

What is 3/4?
200
The ratio of the adjacent side to the hypotenuse.
What is Cosine?
200
Find theta: 

Adjacent =13 Opposite = 4

Round to nearest tenth.

What is 17.1 degrees?
200
Find the missing side: 

Theta = 32, Adjacent = 13 in, Opposite = x

Round to nearest tenth.

What is 8.1 in?
200
Dai is standing 42 feet away from the base of her home, looking up with an angle of elevation of 48 degrees, at Ashley, who is fixing to throw a baseball down to her. How tall is the building? Round to nearest foot.
What is 47 feet?
200
In triangle ABC, angle A is a right angle. 

If Cos A = 12/17, find sin B.

sin B = 12/17.
300
The tangent trig ratio.
What is opposite over adjacent?
300
Find Theta: 

Opposite = 11.9 Adjacent = 10

Round to nearest degree.

What is 50 degrees?
300
Find the missing side: 

Adjacent = x, Theta = 60, Hypotenuse = 11 mi

Round to nearest tenth.

What is 5.5 mi?
300

It is known that triangle RST is similar to triangle WXY. If RS = 18 , ST = 25 , and TR = 11, then what is the ratio of XY to WX to the nearest hundredth? 

What is 1.39?
300
In triangle ABC, angle A is a right angle. 

If tan B = 6/8, find cos B.

What is 4/5?
400
The angle formed by the horizontal line of sight and the line of sight up to an object.
What is the angle of elevation?
400
Find Theta: 

Hypotenuse = 9 Adjacent = 6

Round to nearest tenth.

What is 48.2 degrees?
400
Find the missing side: 

Theta = 50.1, Adjacent = 5 ft, Opposite = x

What is 6 ft?
400

A person who is 68 inches tall casts a shadow that is 54 inches long. At the same moment, a tree casts a shadow that is 18 feet long. What is the height of the tree in feet? Round to the nearest foot.

What is 23 feet?
400
In triangle ABC, angle A is a right angle. 

If cos C = 3/5, find tan B.

What is 3/4?
500
The angle formed by the horizontal line of sight and the line of sight down to an object.
What is the angle of depression?
500
Find Theta: 

Opposite = 3 Adjacent = 3

What is 45 degrees?
500
Find the missing side: 

Opposite = 4 in, Adjacent = x, Theta = 41

Round to nearest tenth.

What is 4.6 in?
500

A tower is located 327 feet from a building. A person from the second story measures an angle of elevation to the top of the tower as 32 degrees and an angle of depression to the bottom of the tower as 18 degrees. Find the height of the tower to the nearest foot.

What is 310 feet?
500
We use these ratios to find a missing angle in a right triangle.
What are inverse trig ratios?
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