Q. 15

2sin<sup

Answer :


L.H.S = 2sin2 +2cos2 +2sec2
        
= 2sin2 +2cos2 +2sec2
        
= 2sin2 + 2cos2 + 2sec2
        
= 2× + 2× + 2× 4
         = 1 + 1+ 8
         = 10
         = R.H.S

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