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Find dy/dx

Find dy/dx 

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Grade:12

1 Answers

noogler
489 Points
7 years ago
21)​put x=coso 
cos-1(5/13coso+12/13sino)           let cosA=5/13,sinA=12/13
=cos-1(cosAcoso+sinAsino)
=cos-1(cos(A- o))=A-cos-1x
now derivate=1/(1-x2)1/2

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