PLEASE ANSWER IT I NEED HELP NOW THANK YOU SO SO MUCH.

Step-by-step explanation:

a  is just the peak value which looks like  a = 2.5

this cos wave function has a phase shift of 60°    A normal cos function with no phase shift has a b of zero

so to make this cos function to have NO phase shift we would substract 60° then cos 0 would be 1×a  so b = -60°

y = 2.5cos(x-60)     when x =60    cos(60-60) = 1     y = 2.5×1

The second question is odd but i'll try

   y = f(2x)      (4, 10)       the origianl f(x) was (4, 5)

   y = f(x) - 7    (4, -2)

1725.1 feet

Step-by-step explanation:

It is given that there is a right angled triangle having a base of length of 130 feet. The angle between the hypotenuse and the base is given as 85.691 degrees.

Therefore, to find the height, we know :

h = 13.27 x 130

  = 1725.1 feet

Therefore, the height of the Eiffel tower =  1725.1 feet