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

ksmith197
 2 years ago
Best ResponseYou've already chosen the best response.1sure, first you need to memorize all of the identitites memorize : sec(x) = 1/cos(x)

Jemurray3
 2 years ago
Best ResponseYou've already chosen the best response.0whoa whoa whoa, \[8\cos^2(x) = 1\] not zero...

ksmith197
 2 years ago
Best ResponseYou've already chosen the best response.1so sec^2(x) = 1/cos^2(x)

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

ksmith197
 2 years ago
Best ResponseYou've already chosen the best response.1anyway multiply across so 1/cos^2(x) * cos^2(x) = cos^2(x) * 8cos(x)

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