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i)If(x/a sin?-y/b cos?)=1 and (x/a cos?+y/b sin?)=2,prove that-(x^2/a^2+y^2/b^2)=2. ii)If(tan?+sin?)=m and (tan?-sin?)=n,prove that-(m^2-n^2)^2=16mn.

Asked by Aditya Chakravarty 15th September 2013, 4:31 PM
Answered by Expert
Answer:
Pls ask one question at a time. Also, pls cross check, the correct statement of first question should be:
 
 
The solution is as follows:
 
 
Answered by Expert 15th September 2013, 10:40 PM
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