Math, asked by pornima20, 1 year ago

plz solve if u know...

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Answered by NeelamG

given 5tantheta-4=0
(5sin theta -4costheta)(5sintheta+4costheta)
multiply and divide by costheta
costheta(5sintheta/costheta -4costheta/costheta)(5sintheta+4costheta)
=costheta(5tantheta-4)(5sintheta+4costheta)
= 0 because 5tantheta-4=0

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