cos(20°) is the correct answer.
Congratulations! This is the unit circle. Literally everyone hates this. Everyone takes this in Trigonometry though, and it's required. I literally failed Trigonometry because of this and had to retake it when getting my degree in Mathematics.
So, what is the x-coordinate of this? Well, for any angle or (angle in triangle) 
, the coordinates are always (
).
In this case, angle is 20°, and so the x-coordinate will be cos(20°) while the y-coordinate will be sin(20°).
Hope this helped!
Answer : 0.0125
Suppose that g (x) varies inversely with x and g (x)=0.2 when x = 0.1.
If x varies inversely with y then y=k/x
Where k is constant of proportionality
g (x) varies inversely with x , so 
g (x)=0.2 when x = 0.1
Plug in the values and solve for k
Multiply 0.1 on both sides
0.02 = k
so 
Now we need to find g(x) when x= 1.6
Plug in 1.6 for x and find out g(x) in the above equation
g(x)= 0.0125
The Area of the fabric required is 3.6 square feet
The square's side length is 3 feet.
Due to the fact that Lin is creating a window covering for a window that is half circle-shaped on top of a square.
The window covering must therefore be a semicircle with a 3-feet diameter.
thus the semicircle's radius is equal to d/2 = 3/2 feet
Now, the Area of the semicircle,
Putting the value of the radius in the equation, we have,
Hence, The Area of the fabric required = 3.6 square feet
To read more about areas, visit brainly.com/question/27683633
#SPJ1
This formula is the exposition of 8 and equals to 6 how u ask ? well if u 8 minus 2 u get 6 than add 6
There are a couple ways to do this. The easiest is probably to set up a proportion.
(3.5/2800)=(6/x)
Cross multiply.
3.5x = 6(2800)
3.5x = 16800
Divide both sides by 3.5
X = 4800miles
