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If sin x =4/5 (in I quadrant) and cos y=...

If `sin x =4/5` (in I quadrant) and `cos y=(-12)/(13)` (in II quadrant), then find `(i) sin (x-y), (ii) cos (x-y)`.

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Verified by Experts

The correct Answer is:
(i) `-(63)/(65)`
(ii) `-(16)/(65)`
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