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OpenStudy (anonymous):
Use a calculator to find the approximate value of arccos(0.77).
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OpenStudy (campbell_st):
do you have a calculator..?
OpenStudy (anonymous):
no not a graphing one
OpenStudy (campbell_st):
you don't need a graphing one.. does you calculator have arccos or cos^-1 above the cos key..?
OpenStudy (anonymous):
no
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OpenStudy (anonymous):
yes i got it thank you i get it now
OpenStudy (campbell_st):
ok... here is an online calculator just enter \[\cos^{-1} ( 0.77) = \] http://web2.0calc.com/
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