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If cos theta =(5)/(13) and 270 ^(@) lt t...

If `cos theta =(5)/(13) and 270 ^(@) lt theta lt 360^(@)`, evaluate `sin ( theta //2) and cos ( theta//2)`

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Verified by Experts

The correct Answer is:
`sin""theta/2=2/sqrt(13)`
`cos""theta/2=(-3)/sqrt(13)`
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