MCQ
Which of the following is true in a triangle ABC?
- A`(b - c) sin (B - C)/2 = 2acos A/2`
- ✓`(b - c)cos A/2 = asin (B - C)/2`
- C`(b + c)cos A/2 = 2asin (B - C)/2`
- D`(b + c)sin (B - C)/2 = 2acos A/2`
✓
Answer
Correct option: B.
`(b - c)cos A/2 = asin (B - C)/2`
B
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