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OpenStudy (anonymous):
how do use solve sec A = 2.4 both with and without a calculator? Dianne (Mom of a summer school student who is desperately trying to dust off her algebra knowledge)
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OpenStudy (amistre64):
trig functions really cant be done by hand unless you have a few weeks to try to keep track of it all
OpenStudy (amistre64):
sec(A) i assume where A is an angle
OpenStudy (amistre64):
\[sec^{-1}(2.4)\] is the answer, but its by calculator since that doesnt appear at first sight to be a common trig angle
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