Unit Circle
What are the order pairs for 30°?
(√3/2, 1/2)
What does the angle of elevation mean?
The term angle of elevation denotes the angle from the horizontal upward to an object.
Sinθ=?
Cosθ=?
Tanθ=?
O/H
A/H
O/A
What are the equations for law of sins?
SinA/a=SinB/b=SinC/c
a/SinA=b/SinB=c/SinC
What do Cows drink?
Water
What are the order pairs for 45°?
(√2/2, √2/2)
What does the angle of depression mean?
The term angle of depression denotes the angle from the horizontal downward to an object.
Cscθ=?
Secθ=?
Cotθ=?
H/O
H/A
A/O
Would you use law of sins to solve right triangles or oblique triangles?
Oblique
Who was the first president of the United States?
George Washington
What does π/3=?
60°
Can the angle of elevation be above 90°?
No, the angle of elevation is always 90° or below.
What is a reference angle?
The reference angle is an angle being sandwiched by the terminal side and the x-axis. It also has to be positive.
A=51°, C=87°, b=6
a=6.96, c=8.95, B=42
Which country made French fries?
Belgium
What does 7π/6=?
210°
An airplane is flying at a height of 2 miles above level ground. The angle of depression from the plane to the foot of the tree is 15°. What is the distance the plane must fly to be directly above the tree?
7.46 miles
Tan(60°)
√3
b=19, c=33, C=84°
SinB=34.9°, SinA=61.1°, a=29.04
What is Usain Bolt's top speed in miles per hour?
27.78 mph
What are the order pairs of 300°?
(1/2, -√3/2)
From a point on the ground 12ft from the base of a flagpole, the angle of elevation of the top of the pole measures 53°. How tall is the flag pole?
15.9 ft
cos(300°)
1/2
Find the area: b=9, a=6, C=60°
A=23.3 units2
How many times does the average person blink per day?
14,400 to 19,200 times a day