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Can U plz help me to solve this?
If(x/a)cosA+(y/b)sinA=1 and (x/a)sinA-(y/b)cosA=1, prove that,(x2/a2)+(y2/b2)=2.

karthikeya , 9 Years ago
Grade 10
anser 2 Answers
Ajay
Take the square of both equations and sum, you will get the proof.
(x/acosA + y/bSinA)2 + (x/asinA - y/bcosA)2  = 2
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Last Activity: 9 Years ago
Ajay
 
Previou answer got messed up, reposting
Take the square of both equations and sum, you will get the proof.
(x/acosA + y/bSinA)2 + (x/asinA - y/bcosA)2  = 2
 
Last Activity: 9 Years ago
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