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`(sqrt(2))/(5)`m`(1)/(sqrt(3))`m`(1)/(2)` m`(5)/(sqrt(2))` m

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DSolution :

(e) Given, `x=5"cos"(2pit+(pi)/(4))` (where, x is a displacement) <br> `impliesx=5"cos"(2pi+(pi)/(4))" "("at " t=1 s)` <br> `" "[because "cos"(360^(@)+theta)="cos"theta]` <br> `implies x=5"cos"(pi)/(4)impliesx=5xx(1)/(sqrt(2))` <br> `therefore x=(5)/(sqrt(2)) m`