Answer:
Step-by-step explanation:
22.5 degrees is half of 45 degrees (special angle for which we know exactly the value of all three basic trigonometric functions (sine, cosine, and tangent).
So we start recalling the formula for tangent of a half angle:
We need just the values of:
and of
to answer the question. Then, we use those values in the original formula for tangent of a half angle:
It would be 22cm because 5+4+4+4+5=22
Answer: i dont know if this counts but heres a link that mit help u with that
Step-by-step explanation:
books.google.com/books?id=TDIaCgAAQBAJ&pg=PA446&lpg=PA446&dq=F(x)+%3D+28+x+%2B+1/2+Find+f+(+22+)&source=bl&ots=yQ5qkfWvqZ&sig=ACfU3U0R-EuQIUx8c-NKOIPgltSt_glNMg&hl=en&sa=X&ved=2ahUKEwiB_p2LsKbkAhVHmK0KHcwwDNUQ6AEwAHoECAgQAQ#v=onepage&q=F(x)%20%3D%2028%20x%20%2B%201%2F2%20Find%20f%20(%2022%20)&f=false
The length of a diagonal of a square is the side*sqrt(2). Let's call one side of the square: s
So we have 18 = s*sqrt(2)
18/sqrt(2) = s
18sqrt(2)/2 = s
9sqrt(2) = s
Since the perimeter is 4 sides we multiply by 4 to get 36sqrt(2) as the perimeter.
The constant of proportionality will be same as the slope of the line. Let's take two points from the line: (0,0) and (1,2)
The slope for a line that passes through two points and is:
Substitute the two points into this formula for slope and we have:
After solving and simplifying, we get
Thus, the slope of the line is 2. This means that the constant of proportionality is 2. Let me know if you need any clarifications, thanks!
~ Padoru