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• What is the value of $\sin 45$.
  1. 0
  2. 1/2
  3. 1/$\sqrt{2}$
  4. 1
  • [3]
  • (5)
  • Check it with calculator
• $\sin^2 x + \cos^2 x =$ …….
  1. 0
  2. 1/2
  3. 1
  4. 2
  • [3]
  • (5)
  • It is a fundamental trigonometric identity identity
• What is relation between $\mathbb{R}$ and $\mathbb{C}$
  1. $\mathbb{R}\le \mathbb{C}$
  2. $\mathbb{R} \subset \mathbb{C}$
  3. $\mathbb{C}\subset\mathbb{R}$
  4. None of these
  • [2]
  • (5)