JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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Application +4 | -1

If in a

\Delta \,ABC,\,\,A = \frac{\pi }{3}

and

AD

is the median, then

View answer and explanation

Correct option: A

2\;\,A{D^2} = {b^2} + {c^2} + \,\,bc

Option A (

2\;\,A{D^2} = {b^2} + {c^2} + \,\,bc

) is correct because it is derived from applying the cosine rule and the median formula.

More Questions from PROPERTIES OF TRIANGLES

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{p_1},{p_2},{p_3}

\Delta \;ABC

A,B,C

\Delta

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5k,\;6k,\;5k

k

\Delta \,ABC

a = \left( {b - c} \right)\sec \theta

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\Delta

\Delta \;ABC

\tan A

A

2 s