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Definition of Vector

a displcement...

Question

a displcement vector R has a magnitude of 25m and makes an angle of 210 with x axis. its y component is?

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Solution

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$T h e d i s p l a c e m e n t v e c t o r o f m a g n i t u d e 25 m m a k e s a n g l e 210 w i t h x a x i s S o i t m e a n s i t i s p r e s e n t i n 3 r d q u a n d r a n t s o t h e a n g l e m a d e w i t h y a x i s i s 270 - 210 = 60^{0} S o t h e v e c t o r a l o n g y a x i s = 25 \cos 60^{0} = 12.5 m R E G A R D S$

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