Homework Soursesin 1cos 1cos sin 2 Solutionsin theta 1 cos theta 1 co
sin 1+cos 1+cos sin 2. 
Solution
sin theta / ( 1+ cos theta ) + ( 1 + cos theta ) / sin theta
lcd = sin theta ( 1 + cos theta )
=( sin^2 theta + 1 + cos^2 theta + 2 cos theta ) / sin theta ( 1 + cos theta )
= ( 2 + 2 cos theta ) / sin theta ( 1 + cos theta )
= 2 ( 1 + cos theta ) / sin theta ( 1 + cos theta )
= 2 / sin theta
= 2 csc theta
