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Mathematics 19 Online
OpenStudy (anonymous):

please i need help!. question attached

OpenStudy (anonymous):

OpenStudy (anonymous):

alright lets see..

OpenStudy (anonymous):

you cannot answer this question if you draw a triangle like this |dw:1399253170799:dw|

OpenStudy (anonymous):

you see that the adjacent side must be 4 by pythagoras, or by memory |dw:1399253232974:dw|

OpenStudy (anonymous):

so you are supposed to say \(\cos(\theta)=\frac{4}{5}\) but that is incorrect, it could be that \[\cos(\theta)=\frac{4}{5}\] but it could also be that \[\cos(\theta)=-\frac{4}{5}\] you are given no way of knowing which is correct

OpenStudy (anonymous):

yea i agree with u satellite73

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