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djyliett [7]
3 years ago
6

What is the exact value of sec(-405degress)?? ...?

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
3 0
Sec= 1/(cos), you can add or subtract 360 degrees from any angle measurement without changing the value of any of the trig functions i.e. 405 degrees= 405-360=45. cos of 45 is sqrt(2)/2 so sec405= 2/sqrroot2
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