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Geometry 17 Online
OpenStudy (anonymous):

help !?! How are the sin 70° and the cos 20° related? Explain using complete sentences.

OpenStudy (anonymous):

@kayla_b_stephens can u help me ??

OpenStudy (anonymous):

no i dont think i can

OpenStudy (anonymous):

are you familar with formulae of trignomty???

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

okay then do you know that sin(90-thetha)=cos thetha?

OpenStudy (anonymous):

okay so here is your proof! sin 70 = sin (90-20) then according to the formula above sin(90-20)=cos 20 ie sin 70=cos 20 VOILA! there ya go

OpenStudy (anonymous):

thanks for the help

OpenStudy (anonymous):

your welcome! glad to help .. dont forget to fan me #rawr ... im a tiger

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