Question

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

# 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.

Solution