Answer:
The measure of the reference angle is 
Step-by-step explanation:
The reference angle of an angle is the magnitude of the smallest angle it makes with the x-axis. In this case, we have 
(*Note: 
, use 
to convert to degrees)
Answer:
Intersecting
Step-by-step explanation:
They are intersecting because they are overlapping at one point but do not make a 90 degree angle Thus not being perpendicular. Also they are not parallel cause they are intersecting
Answer: y+1=-2(x-1)
Step-by-step explanation:
The point-slope formula is 
. Since we know the coordinate and slope, we can directly plug them in.
It will be 3 because it’s have of the diameter on the circle and this that diameter is folded again
Square root 156.25 to get the values of the sides of the square. You will get 12.5m for each side.
Now that you have the side values, use Pythagoras' Theorem to solve for the diagonal. Let's call the diagonal x,
c^2 = a^2 + b^2
x^2 = 12.5^2 + 12.5^2
= 312.5
Square root both sides to get x,
x = 17.68m (2 d.p)
HOPE THIS HELPED! Ask me if there is anything you don't understand from this working :D
