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prove that
2cos(x+y)/2.cos(x-y)/2=tan(x-y)/2
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sin(x+y)/sin(x-y)=tanx+tany/tanx+tany
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hello...
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please refer the above attachment...
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sorry about my handwriting..
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thank you..
☺
_____________________________
please refer the above attachment...
_____________________________
sorry about my handwriting..
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thank you..
☺
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Hi I hope that this helps
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