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25-07-2020
Mathematics

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Describe how you can determine the quadrant in which the terminal side or angle a lies if sin a =-1/4

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CSMedrano CSMedrano

25-07-2020

Step-by-step explanation:

Well it's easy, you can write sin a=y/r

in which y is the y coordinate and r the hipotenuse.

so if sin a is negative that must mean that "a" is where y is negative and that happens in the third and fourth quadrant

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