Mark M. answered • 04/15/21

Retired Math prof with teaching and tutoring experience in trig.

0 + π/4 = π/4, π/2 + π/4 = 3π/4, π+ π/4 = 5π/4, 3π/2 + π/4 = 7π/4

Mark M.

04/16/21

Brian P.

asked • 04/15/21How would I add increments of p/4 to an x-axis when phase shifting a cosine graph.

Say my x-axis looks like:

0 | | p/2 | | p | | 3p/2 | | 2p

How do I easily fill in the increments (|)?

More

Mark M. answered • 04/15/21

Tutor

4.9
(890)
Retired Math prof with teaching and tutoring experience in trig.

0 + π/4 = π/4, π/2 + π/4 = 3π/4, π+ π/4 = 5π/4, 3π/2 + π/4 = 7π/4

Mark M.

tutor

Since you are translating the graph of y = cosx pi/4 to the right, just add pi/4 to each of 0, pi/2, pi, and 3pi/2 to get pi/4, 3pi/4, 5pi/4, and 7pi/4
Report

04/16/21

Sam Z. answered • 04/15/21

Tutor

4.3
(12)
Math/Science Tutor

Just make the "p" into a 1.

1/4, 1/2, 3/4, 1..................

cos= 75.5, 60, 41.4, 0..................

Brian P.

I am so thoroughly confused and have been trying to understand this for days. If my phase shift is (x-pi/4) : my x axis would look like: 0 | | pi/2 | | What are the values of those first lines after 0?? and the values of the two lines after pi/2??
Report

04/16/21

Ask a question for free

Get a free answer to a quick problem.

Most questions answered within 4 hours.

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.

Brian P.

I am so thoroughly confused and have been trying to understand this for days. If my phase shift is (x-pi/4) : my x axis would look like: 0 | | pi/2 | | What are the values of those first lines after 0?? and the values of the two lines after pi/2??04/16/21