sin theta+1-cos theta/sin theta-1+cos theta=sin theta +1/cos theta
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sin(90-theta)+1 cos theta/ sin(90-theta) -1cos theta = sin(90-theta)+1/cos theta
cos +1 cos theta + 1 cos theta /cos theta-1 cos theta =cos theta +1 /cos
theta
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cos +1 cos theta + 1 cos theta /cos theta-1 cos theta =cos theta +1 /cos
theta
1
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