Question 1062822
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 If cos theta- sin theta =0 and  theta lies in the first quadrant  then find the values of theta  
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<pre>
{{{cos(theta) - sin(theta)}}} = 0  ----->  {{{cos(theta)}}} = {{{sin(theta)}}}  ---->  (divide both sides by {{{cos(theta)}}})  ---->  {{{tan(theta)}}} = 1  ---->  {{{theta}}} = {{{pi/4}}}.


<U>Answer</U>.  {{{theta}}} = {{{pi/4}}}.
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