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OpenStudy (anonymous):
help !?! How are the sin 70° and the cos 20° related? Explain using complete sentences.
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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?
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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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