Posted by **BreAnne** on Friday, February 3, 2012 at 1:41pm.

What is the domain, range, and period of y= sin x + 1

What is the domain, range, and period of y= -cos x

Can someone please help?

- trig -
**Steve**, Friday, February 3, 2012 at 3:08pm
domain of sin(x) and cos(x) is all reals

period of sin(x) and cos(x) is 2pi

range of sin(x) and cos(x) is [-1,1]

sin(x)+1 is just like sin(x) but raised +1 on y, so all that's changed is the range: [0,2]

-cos(x) is just cos(x) reflected in the x-axis, so nothing is changed.

- trig -
**BreAnne**, Friday, February 3, 2012 at 4:07pm
thank you!

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