Cos x = sin 2x
cos x = 2 sin x cosx
2sin x cos - cos x = 0
cos x( 2 sin x - 1) = 0
cos x = 0 or sin x = 1/2
so required values of x are pi/6 , 5pi/6 , pi/2, 3pi/2.
First we compute the distance between the center and the given point which is exactly the radius
r =
Now that we know the center and the radius, we can write the equation of a circle with given radius and center:
where (h,k) represent the coordinates of the center (3,7).
We substitute and obtain
What letter do u need to solveeewhq
Answer:
it is 84 inches all together