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In any triangle ABC, show that AB^(2)+...

In any triangle ABC, show that
`AB^(2)+AC^(2)=2(AD^(2)+BD^(2))`
where, D is the middle point of BC.

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MODERN PUBLICATION-VECTORS-Exercise
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  10. Constant forces 2hati-5hatj+6hatk and hati+2hatj-hatk act on a particl...

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  11. Forces of magnitudes 5 and 3 units acting in the directions 6hati + ...

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  12. Which is greater: 45 kg or 4500 g?

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  13. Find vecaxxvecb, if : veca=-hati+3hatk and vecb=hati+3hatj-2hatk.

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  14. Find vecaxxvecb, if : veca=hati-3hatj+4hatk and vecb=2hati+hatj+hatk.

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  15. The value of : hati*(hatjxxhatk)+hatj*(hatkxxhati)+hatk*(hatjxxhati) i...

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  16. The value of : hati*(hatjxxhatk)+hatj*(hatixxhatk)+hatk*(hatixxhatj) i...

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  17. Find the value of 'p' is : (2hati+6hatj+27hatk)xx(hati+3hatj+phatk)=ve...

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  18. If veca=hati-hatj+2hatk and vecb=2hati+hatj-hatk, find : (2veca-vecb)x...

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  19. Find vecaxxvecb, if veca=2hati+hatj+3hatk and vecb=3hati+5hatj-2hatk

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  20. If veca=4hati+3hatj+hatk and vecb=hati-2hatk, then find |2vecbxxveca|.

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