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## Homework Statement

[itex]\int_{c}cos (x)dx+sin(y)dy[/itex] where c consist of the top half of the circle x^2+y^2=1 from (1,0) to (-1,0)

## The Attempt at a Solution

Do I parameterise x=t and then y becomes [itex]y= (1-t^2)^{1/2}[/itex]....? Replace the corresponding dx and dy and then integrate between the limits?