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Let 'l' is the length of median from the...

Let 'l' is the length of median from the vertex A to the side BC of a `Delta ABC`. Then

A

`4l^(2)=2b^(2)+2c^(2)-a^(2)`

B

`4l^(2)=b^(2)+c^(2) +2bc cos A`

C

`4l^(2)=b^(2)+4bc cos A `

D

`4l^(2)- (2s-a)^(2) -4 bc sin ^(2)((A)/(2))`

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The correct Answer is:
A, B, C, D
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ARIHANT MATHS-PROPERTIES AND SOLUTION OF TRIANGLES -Exercise (More Than One Correct Option Type Questions)
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  10. In Delta ABC, which of the followinhg statemnts are ture

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  13. If a, b, A be given in a triangle and c1 and c2 be two possible value ...

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  18. If H is the orthocentre of the triangle ABC, R = circumradius and P =A...

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  19. If inside a big circle exactly n(nlt=3) small circles, each of radius ...

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