SOLUTION: Given:cos A=5/13 Evaluate:(1.)(sinA-cotA)/2tanA (2.) cotA+1/cosA

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Question 981133: Given:cos A=5/13
Evaluate:(1.)(sinA-cotA)/2tanA (2.) cotA+1/cosA
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Given:cos A=5/13
Evaluate:(1.)(sinA-cotA)/2tanA (2.) cotA+1/cosA
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No quadrant was given, so assume Q1.
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sin = sqrt(1 - cos^2) = 12/13
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tan = sin/cos
cot = cos/sin
It's just arithmetic from here.