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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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Application +4 | -1
If angles A,BA, B and CC are in AP, then a+cb\frac{a+c}{b} is equal to
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Correct option: B
cos⁡(A−C2)\cos \left(\frac{A-C}{2}\right)
Option B (cos⁡(A−C2)\cos \left(\frac{A-C}{2}\right)) is correct because using the properties of AP and trigonometric identities, the expression simplifies to this result.

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