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worty [1.4K]
4 years ago
12

Evaluate: sec(5pi/4)

Mathematics
1 answer:
Maurinko [17]4 years ago
4 0
If you see your unit circle 
our coordinates for 5pi/4 are  ( - rad 2 / 2 , - rad 2 /2)

sec is 1/cos 

do some algebra 
1/ - rad2/2  
once you solve your final answer is - rad2 
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