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shakeel123

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Sin α =?

11th Class Punjab Board Exams Quizzes MCQs Quizzes Punjab Mathematics 11th Class Model Paper Chapter No 7

Question:
Sin α =

Option A):
Sin  α/2   cos α/2
Option B):
2Sin  α/2   cos α/2
Option C):
1
Option D):
cos²  α/2   - sin²  α/2

Correct Answer is Option B):
2Sin  α/2   cos α/2

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