SOLUTION: Having trouble understanding inverse trig functions / calculating exact values.... Sec^-1 (2.2500)=

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Question 330363: Having trouble understanding inverse trig functions / calculating exact values....
Sec^-1 (2.2500)=

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
What sort of trouble?
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Sec^-1 (2.2500)=
secant = 1/cosine
--> arccos(1/2.25) = arccos(4/9)
Calculators have sine, cosine and tangent
arcsec(2.25) =~ 63.6 degs

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