Asked by Kathy
The graphs of y=sin(2x+pi/4) and y=cos(2x-pi/2) are identical...true or false?
Answers
Answered by
Reiny
recall sin x = cos (π/2 - x) or sin x = cos(90°-x)
so y = sin (2x + π/4)
= cos (π/2 - 2x - π/4)
= cos (-2x + π/4)
= cos (2x - π/4) , because cos (-x) = cos x
so , not true
so y = sin (2x + π/4)
= cos (π/2 - 2x - π/4)
= cos (-2x + π/4)
= cos (2x - π/4) , because cos (-x) = cos x
so , not true
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.