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If 0 le x, y le 180^(@) and sin(x-y)=cos...

If `0 le x, y le 180^(@)` and `sin(x-y)=cos (x+y)=1/2`, then the values of x and y are given by

A

`x=pi//4,y=3pi//4`

B

`x=pi//4,y=3pi//12`

C

`x=5pi//4,y=5pi//12`

D

`x=11pi//12,y=3pi//4`

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