CPM Homework Help : CCA2 Problem 8-177

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8-177.

Graph two cycles of each function.

$y = −2\cos(x +\frac { \pi } { 2 })$
Hint (a):
What is the amplitude?Where is the locator point? What is the orientation? What is the period?
Answer (a):

$y = \sin(x -\frac { \pi } { 2 })$
Hint (b):
See part (a).

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