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AP EAMCET2013MathematicsTrigonometric Ratios & Identities

If ( )= ( ) , then a value of ( - 4 ) among the following is

Options

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

Correct answer

A. 1 2 2

Step-by-step solution

Given, ( )= ( ) aligned & ( )= 2 - & = 2 - & + = 1 2 & 1 2 + 1 2 = 1 2 2 & 4 + 4 = 1 2 2 & ( - 4 )= 1 2 2 aligned

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