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If sin^(2).(A)/(2)+sin^(2).(B)/(2)+sin^(...

If `sin^(2).(A)/(2)+sin^(2).(B)/(2)+sin^(2).(C)/(2)` are in H.P , show that a , b, c are in H. P

Text Solution

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The correct Answer is:
`rArr (2)/(b) = (1)/ ( c ) + (1)/(a) rArr a,b,c `are in H.P.
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