CBSE Class 11-science Answered
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Asked by | 17 May, 2009, 06:03: PM
Expert Answer
sin2A+cos2A+sec2A+cosec2A+tan2A+cot2A = 1+ 1+tan2 A + 1+cot2 A+ tan2 A+ cot2 A (using identities)
= 3+2(tan2 A + cot 2 A)
minimum value of (tan2 A + cot 2 A) = 2
So Minimum value of sin2A+cos2A+sec2A+cosec2A+tan2A+cot2A = 7
Answered by | 21 May, 2009, 11:17: AM
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