CBSE Class 12-science Answered
differentiation
Asked by | 24 Jul, 2008, 10:53: PM
Expert Answer
here let cos a = 2/(13)1/2 and sin a = 3/(13)1/2
since cos(A-B) = cosA cosB + sinA sinB
so ( 2cosx+3sinx ) / (13)1/2 = cos (x-a)
y = cos-1(cos(x-a)) = x-a
dy/dx = 1 (since a is a constant )
Answered by | 11 Aug, 2008, 06:06: PM
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