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About LinkBackswhat is the relationship between x and y
if
and
[Ans: x^2 + y^2 = 10]
Solution:
this is my approach
i use reverse engineering to get the correct answer (which is unacceptable):
and this is what i get
 + 2y^2(\sin^{2}\theta) )
Originally Posted by TechnicianEngineer
what is the relationship between x and y
if
and
[Ans: x^2 + y^2 = 10]
Solution:
this is my approach
i use reverse engineering to get the correct answer (which is unacceptable):
and this is what i get
=x^2cos^2(t)+y^2sin^2(t)+x^2sin^2(t)+y^2cos^2(t)=
x^2(cos^2(t)+sin^2(t))+y^2(cos^2(t)+sin^2(t))=
x^2*1+y^2*1
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