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GATE ECE 2013 | Question: 6

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The maximum value of $\theta$ until which the approximation $\sin\theta \approx \theta $ holds to within $10\%$ error is

  1. $10^{\circ}$
  2. $18^{\circ}$
  3. $50^{\circ}$
  4. $90^{\circ}$

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