- #1
supernova1203
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Homework Statement
The ratio sin theta =-12/13
Homework Equations
The Attempt at a Solution
which comes out to according to my calcuations -0.9230, i then use 2nd sin function on my calculator and come up with -67.3 degrees
this answer is legitimate but another way of writing it would be 180-67.3 degrees
which is 112.7 degrees
180-67.3
=112.7
but the book for some reason shows sin theta = 12/13, it removes the negative on the 12 value when it does the 2nd sin function on calculator(atleast that's what it looks like) why does it do this?
the books answer comes out to be
theta= 180+ 67.3
=247.3
so the plus and minus is what is different about my solution and books. it could be a typo, there have been many in my course book @_@