Q15 of 35 Page 3

2sin2 +2cos2 +2sec2 = 10


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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