SOLUTION: verify identities find cos theta and csc theta if tan theta= -8/5 and sec>0 Please help, I haven't been in class for a day in precal and I am so lost!

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Question 1070306: verify identities
find cos theta and csc theta if tan theta= -8/5 and sec>0

Please help, I haven't been in class for a day in precal and I am so lost!

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
find cos theta and csc theta if tan theta= -8/5 and sec>0
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r = sqrt(x^2 + y^2) = sqrt(89)
tan negative & sec positive --> Q4
tan = y/x --> (5,-8) terminal point
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cos = x/r = 5/sqrt(89)
csc = r/y = sqrt(89)/-8 = -sqrt(89)/8