2 ) 4. A vector A makes an angle of 20°and B makes an angle of 110° with the X-axis. The magnitude of these vectors are 3 m and 4 m respectively. Find the resultant.

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( sqrt{9^{2}+b^{2}+2 a b cos a} ) ( sqrt{a^{2}+b^{2}} ) ( =sqrt{frac{1}{2}+4} )

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