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straight A with rightwards arrow on top equals1+2j+2k, calculate the angle between A with not stretchy rightwards arrow on top and Y axis

  1. sin-1 fraction numerator square root of 5 over denominator 3 end fraction
  2. sin-1 fraction numerator 1 over denominator square root of 3 end fraction
  3. sin-1 fraction numerator square root of 10 over denominator 3 end fraction
  4. cos-1 fraction numerator square root of 5 over denominator 3 end fraction

The correct answer is: sin-1 fraction numerator square root of 5 over denominator 3 end fraction

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