1.

If tanx = (2b)/(a-c) , a ne c, y = a cos^2 x + 2b sinx.cos x + c sin^2 x z = a sin^2 x -2b sinx.cos x+"c" cos ^2x then

Answer»

y = Z
`y - z = a +C`
`y - z = a - c`
`y - z = (a-c)^2 + 4b^2`

ANSWER :C


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