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Maths question.plz answer |
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Answer» HEY !!! 8sec²¢ - 6sec¢ + 1 = 0 let us CONSIDER sec¢ = x then it will be formed a quadratic equations 8x² - 6x + 1 = 0 => 8x² - 4x - 2x + 1 = 0 [Using spliting term method ] => 4x ( 2x - 1 ) - 1 ( 2x - 1 ) = 0 => (4x - 1 ) ( 2x - 1 ) = 0 => 4x - 1 = 0 x = 1/4 similarly (2x - 1 ) = 0 x = 1/2 .. MEANS , sec¢ = 1/4 , 1/2 but range of sec¢ is (-∞,0)to ( ∞ , 1) since , it has no real roots hence option ( 4) is correct option ____________________________ HOPE it HELPS you !!! @Rajukumar111 |
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