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secx=3.45 (0<=x<=2pi) (Accurate to 2 decimal places)

secx=-5.2 (0<=x<=2pi) (Accurate to 2 decimal places)

How do you do these questions?...i am getting mixed up by doing it on the calculator...use radian or degrees mode??....cos or cos-1???.....and also about csc and cot too....can anybody explain thoroughly how to do them? (Maybe give more examples)

Thanks

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# Homework Help: Use radian or degrees mode?

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