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Question Number 48656 by rahul 19 last updated on 26/Nov/18

Commented by rahul 19 last updated on 26/Nov/18

I′m getting (b) but ans. is (c)!

$${I}'{m}\:{getting}\:\left({b}\right)\:{but}\:{ans}.\:{is}\:\left({c}\right)! \\ $$

Commented by ajfour last updated on 26/Nov/18

i also get e=(b^2 /a^2 ) = tan^2 φ .

$${i}\:{also}\:{get}\:{e}=\frac{{b}^{\mathrm{2}} }{{a}^{\mathrm{2}} }\:=\:\mathrm{tan}\:^{\mathrm{2}} \phi\:. \\ $$

Commented by rahul 19 last updated on 27/Nov/18

thanks sir for verification!��

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