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AP EAMCET2009MathematicsTrigonometric Ratios & Identities

x (x-2 y) = (x-y) y is equal to

Options

  1. A1+ 1-
  2. B1- 1+
  3. C1+
  4. D1-

Correct answer

B. 1- 1+

Step-by-step solution

aligned tan(x-y) y= (x-y) y (x-y) y 2 2 = (x-2 y)- (x) (x-2 y)+ (x) = 1- x (x-2 y) 1+ (x) (x-2 y) = 1- 1+ & ( Given, = x (x-2 y) ) aligned

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