Help questions by Kristyn Wilson https://padlet.com/wilsonkr/help Post a question and when I check it I will respond. en-us 2014-12-05 13:52:50 UTC 2023-01-25 01:45:58 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/notebook.jpg How do I find the amplitude https://padlet.com/wilsonkr/help/wish/263046975 (Max -min) / 2 = amplitude]]> 2018-05-23 14:34:51 UTC https://padlet.com/wilsonkr/help/wish/263046975 How do you find the phase shift? https://padlet.com/wilsonkr/help/wish/263197124 The easiest way is to either determine how far the max has moved from the start point for a cosine function. For a sine function see how far the start (axis of curvature location) has moved.
If going from sine to cosine.... cos has to move 90 to the right, but if there is a k value, divide the phase shift by that.
Ie:  sinx is the same as cos(x-90)
sin45x is the same as cos45(x-2)]]> 2018-05-24 00:34:14 UTC https://padlet.com/wilsonkr/help/wish/263197124 https://padlet.com/wilsonkr/help/wish/263363147 How do you find the equation from a set of data? 
To get the amp: (max-min)/2=(7.72-4.62)/2=1.55
C value = (7.72+4.62)/2=6.2
K value =360/period=360/12=30
For the d value... for a sine function the minimum is usually 3/4 of the way through the cycle which would be month 9... but this function has it 6 months... therefore it is 3 months back, so d is -3
1.55sin[30(x+3)]+6.2]]> 2018-05-24 14:19:03 UTC https://padlet.com/wilsonkr/help/wish/263363147 https://padlet.com/wilsonkr/help/wish/263371536 Can you find the d value using a given point?
Yes, it might be messier numbers given that it is a scatterplot and you are creating a curve of best fit.
You may have to consider the ambiguous case making it harder to do.]]> 2018-05-24 14:42:53 UTC https://padlet.com/wilsonkr/help/wish/263371536 https://padlet.com/wilsonkr/help/wish/263461883 is finding cosine and sine when they intersect will that be on the test 
It could be. That is a fair question... think special triangles

]]> 2018-05-24 19:03:39 UTC https://padlet.com/wilsonkr/help/wish/263461883 how do you make an equation go from sine to cos https://padlet.com/wilsonkr/help/wish/263517355 Move it 90 degrees to the right]]> 2018-05-25 01:43:23 UTC https://padlet.com/wilsonkr/help/wish/263517355 is the test tiered https://padlet.com/wilsonkr/help/wish/263519983 No]]> 2018-05-25 02:06:17 UTC https://padlet.com/wilsonkr/help/wish/263519983