Wednesday

October 22, 2014

October 22, 2014

Posted by **trig** on Thursday, May 7, 2009 at 5:46pm.

My equation looks something like this so far:

y=50sin(2pi/11(x-d))+60

so How do I get the phase shift? d? I am confused about what would be x and y to plug into the formula and find d? Because the max occurs at 1750, but what would be the x and y values to sub in and why?

- Anonymous -
**Damon**, Thursday, May 7, 2009 at 5:58pmy=50sin( 2pi(x-d)/11 )+60

when x = 1750, you have a max and sin (2 pi(1750-d)/11) = 1

or 2 pi (1750-d)/11 = pi/2 (90 degrees for max of sin function)

1750-d =11/4 (in other words a quarter of a cycle after start)

d = 1750 - 11/4

- Anonymous -
**trig**, Thursday, May 7, 2009 at 6:02pmHow did you get 1750-d=11/4?

- Anonymous -
**trig**, Thursday, May 7, 2009 at 6:10pmI mean, so would d = 1747.25

ie

y=50sin(2pi/11(x-1747.25))+60

**Answer this Question**

**Related Questions**

Calculus - Find any absolute max/min and local max/min for the function f(x)=x^3...

MAth - If 1 gallon (gal) of water weighs 8.34 pounds (lb), how much does 3.75 ...

trig - I have finished the questions for the following, but could someone please...

PreCalc - y =( (C-A)/2 ) sin( (X - (A - ( (C - A)/2 ) ) )( pi/(C-A) ) ) + (B...

math - how to solve this problem: max min(x-y)..... here where the max have ...

Math Max min problems - The power P delivered to a load by a current of i ...

algebra - Find the max or min value for y given the restictions on x. y= x^3 -x^...

Math - For each of the following quadratics, determine if the equation has a max...

calculus - Sketch the curve y = x^3 - 12x^2 + 36x I already did the question ...

Math- Double check - Please double check me Find the median of the following set...