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OpenStudy (anonymous):
Walk me through this
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OpenStudy (giobott09):
Go on....
OpenStudy (anonymous):
OpenStudy (anonymous):
ok sin70= sin(90-20)=cos20, you know quadrants charts, how ratios and their signs change,right? as (90-theta) lies in first quadrant and all ratios in the first quadrant achieve positive sign....
OpenStudy (giobott09):
He did the work faster that I can type @aryandecoolest
OpenStudy (anonymous):
@Giobott09 Hahaha buddy i know you are genius...Never undermined you :)
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OpenStudy (giobott09):
@aryandecoolest :D
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