1.

A quadratic equation whose roots are tan22""1^@/2 and cot22""(1^@)/2 is

Answer»

`x^2 -2sqrt2x+1=0`
`2X^2-sqrt2x+1=0`
`x^2+2sqrt(2x)-1=0`
`x^2-2sqrt(2x)-1 =0`

ANSWER :A


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