Question 1205811
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Rewrite each expression as a function of a single angle. You do not need to solve for the function at that angle. 

  {{{(1-cos(152^o))/(sin(98^o)*cos(54^o) + cos(98^o)*sin(54^o))}}}
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<pre>
Use the formula of addition arguments for sine function

    sin(a+b) = sin(a)*cos(b) + cos(b)*sin(a)


and get

  {{{(1-cos(152^o))/(sin(98^o)*cos(54^o) + cos(98^o)*sin(54^o))}}} = {{{(1-cos(152^o))/sin(98^o+54^o)}}} = {{{(1-cos(152^o))/sin(152^o)}}}.  <U>ANSWER</U>


The last expression is what you want to get.
</pre>

Solved.