If sin θ is real, then θ =

- a)π
- b)π/2
- c)π/3
- d)π/6

Correct answer is option 'A'. Can you explain this answer?

2 Answers

Vikash Yadav
answered
2 weeks ago

First Method:

->take conjugate and put imaginary part equals to 0.

Second Method:

-> Substitute the values of 'theta' and check which option has no imaginary part.

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