trigonometry1 trigonometry1

07-11-2016
Mathematics

contestada

prove sin^3z*cos^2z=sin^3z-sin^5z

Respuesta :

07-11-2016

left hand side
sin^3z × ( 1 - sin^2z ) = RHS
let sin z = y
y^3 × ( 1 - y^2 ) = RHS
y^3 - y^6 = RHS
sin^3z - sin^6z = RHS

the answer at RHS should be to the power of 6 . u better check it next time

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