SOLUTION: verify the idenity 54. ln [sec}= - ln[cos]

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Question 171839: verify the idenity
54. ln [sec}= - ln[cos]
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
54. ln [sec}= - ln[cos]
sec = 1/cos, or sec^(-1)
So ln(sec) = -ln(cos)