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OpenStudy (anonymous):
How do I find the exact value of of sec (-5pi/3)??
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hero (hero):
replace pi with 180,then continue solving
hero (hero):
sec(-5(180)/3) = sec(-5(60)) = sec(-300) = 1/cos(-300) = 1/.5 = 2
OpenStudy (anonymous):
Thanks ton!
OpenStudy (anonymous):
How did you get to the 1/.5 step?
OpenStudy (anonymous):
Oh nevermind
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OpenStudy (unklerhaukus):
cos (-300) = cos (60)
OpenStudy (anonymous):
Ok that makes sense thanks
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