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AP EAMCET2011MathematicsTrigonometric Ratios & Identities

A= 3 4 32 ( A 2 ) ( 5 A 2 )=

Options

  1. A7
  2. B8
  3. C13
  4. D11

Correct answer

D. 11

Step-by-step solution

aligned & 16 [2 A 2 ( 5 A 2 ) ]=16[ 2 A- 3 A] & =16 [2 ^2 A-1- (4 ^3 A-3 A ) ] & =16 [2 ( 3 4 )^2-1- (4 27 64 -3 3 4 ) ] & =16 [ 1 8 - ( 27 16 - 9 4 ) ] & =16 [ 2-27+36 16 ] & =11 aligned

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