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JEE Main Mathematics question

MathematicsSolution of TrianglesJEE Main

Not in JEE syllabus

If the sides , and of a are in AP, then is

Answer: (D)

Solution

Use , and . With in AP: , so , and . Then $Missing argument for \frac\frac A2+Missing argument for \frac\frac

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Question ID VK-008499