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Mathematics 22 Online

OpenStudy (studygurl14):

Can someone help me with a unit circle question? I can never understand these.

11 years ago

OpenStudy (studygurl14):

Use the unit circle to help you find teh value of sin(-90degrees)

11 years ago

OpenStudy (studygurl14):

@zepdrix @cwrw238

11 years ago

OpenStudy (johnweldon1993):

|dw:1414789771039:dw|

11 years ago

OpenStudy (johnweldon1993):

So first ...we are looking for the sin...which is the vertical component in the unit circle correct?

11 years ago

OpenStudy (studygurl14):

correct

11 years ago

OpenStudy (johnweldon1993):

We begin moving from the positive x-axis in our circle, and move counterclockwise NORMALLY however...notice the degree measurement we want is NEGATIVE...we must travel CLOCKWISE 90 degrees

11 years ago

OpenStudy (studygurl14):

|dw:1414789966480:dw| like that?

11 years ago

OpenStudy (johnweldon1993):

Not quite |dw:1414789946829:dw|

11 years ago

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