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Question

If x=2sin θ1+sin 2θ+cos 2θ and θ=45°, then find the value of x.
  1. 2
  2. 12
  3. 2
  4. 0


Solution

The correct option is B 12
Given, x=2sin θ1+sin 2θ+cos 2θ and θ=45°

x=2sin 45°1+sin 90°+cos 90°x=2×121+1+0=22=12

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