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 Sep, 2013, 04:31: PM

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  | 15th Sep, 2013, 10:40: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.