Sin(x)
sin(x) =
sin(x) = opposite/hypotenuse
cos(x) =
cos(x) = adjacent / hypotenuse
tan(x) =
tan(x) = opposite / adjacent
The distance from the center of a circle to one of its outer points is called the ______
The distance from the center of a circle to one of its outer points is called the radius
What day was I born?
May 23, 1987
sin(x)/cos(x) =
sin(x)/cos(x) = Opposite / Adjacent = Tan(x)
What is cos(30 degrees)?
What is cos(30 degrees)?
sqrt(3)/2
There are two points on the unit circle where tan(x) = 1. Name at least one of them. (you can give your answer in degrees and radians)
There are two points on the unit circle where tan(x) = 1. Name at least one of them. (you can give your answer in degrees and radians)
45 degrees (Pi/4 radians)
225 degrees (5Pi/4 radians)
What is the standard form of the equation of a circle?
What is the standard form of the equation of a circle?
(x - h)2 + (y - k)2 = r2
Name at least 4 -stan countries.
Kazakhstan, Uzbekistan, Pakistan, Afghanistan, Tajikistan, Turkmenistan, Kyrgyzstan
What's sin(45 degrees)?
sqrt(2)/2
What is cos(Pi/6 radians)?
What is cos(Pi/6 radians)?
sqrt(3)/2
At what degrees on the unit circle is tan(x) undefined?
At what degrees on the unit circle is tan(x) undefined?
90, 270 degrees
(or 90 + 180x degrees)
a) How do you convert degrees to radians?
b) How do you convert radians to degrees?
a) How do you convert degrees to radians?
degrees * (Pi/180) = radians
b) How do you convert radians to degrees?
radians * (180/Pi) = degrees
Matematik gør mig stærk
"Math makes me powerful" - in which language?
Matematik gør mig stærk
"Math makes me powerful" - in Danish
If there is a point on the unit circle in Quadrant III where x = -3/5, what is y?
If there is a point on the unit circle in Quadrant III where x = -3/5, what is y?
Quadrant III (x, y) -> (-, -)
(-3/5)2 + y2 = 1
9/25 + y2 = 1 -> y2 = 16/25, y = -4/5
Name all of the Scandinavian countries
Norway, Sweden, Iceland, Finland, Denmark