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DenebelBest ResponseYou've already chosen the best response.0
I got lost on the first step.. Sorry, can you explain it more?
 2 years ago

ksmith197Best ResponseYou've already chosen the best response.1
sure, first you need to memorize all of the identitites memorize : sec(x) = 1/cos(x)
 2 years ago

Jemurray3Best ResponseYou've already chosen the best response.0
whoa whoa whoa, \[8\cos^2(x) = 1\] not zero...
 2 years ago

ksmith197Best ResponseYou've already chosen the best response.1
so sec^2(x) = 1/cos^2(x)
 2 years ago

DenebelBest ResponseYou've already chosen the best response.0
dw:1329118155688:dw So like this?
 2 years ago

ksmith197Best ResponseYou've already chosen the best response.1
anyway multiply across so 1/cos^2(x) * cos^2(x) = cos^2(x) * 8cos(x)
 2 years ago

DenebelBest ResponseYou've already chosen the best response.0
So it would be x = pi/3 instead of pi/2 right?
 2 years ago
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