A parallelogram is formed with a- and b- as the sides- Let d-1 and d-2 be the diagonals of the parallelogram then a2-b2- -

The correct option is C (d_1^2+d_2^2)/2 a + b = d_1 ......eqn (1) a #160; b = d_2 .........eqn(2)squaring and adding eqn (1) amd eqn(2), we ge ...

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Addition of Vectors

A parallelogr...

Question

A parallelogram is formed with $\to a$ and $\to b$ as the sides. Let ${\to d}_{1}$ and ${\to d}_{2}$ be the diagonals of the parallelogram then $a^{2} + b^{2} = ?$

(d_{1}^{2} + d_{2}^{2}) / 2

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(d_{1}^{2} - d_{2}^{2}) / 2

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d_{1}^{2} + d_{2}^{2}

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d_{1}^{2} - d_{2}^{2}

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Solution

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