What are the six trig values of -5/13?

1 Answer
Alan P.
May 16, 2016

If -5/13 is meant to be the angle (in radians) then use of a calculator or similar technology is the only way to reasonably evaluate:

sin(-5/13)=-0.3752color(white)("XXxX")csc(-5/13)=-2.66523
cos(-5/13)=0.926943color(white)("XXxX")sec(-5/13)=1.078815
tan(-5/13)=-0.40477color(white)("XXX")cot(-5/13)=-2.47051

If (-5/13) is meant to be the ratio of two sides of the associated triangle (e.g. if what is intended is something like sin(theta)=(-5)/13)
then we need to be told which sides are being indicated.

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