1.

OA is a crank of 2 meters long which rotates about O. AB is a connecting rod to B with AB = 5 meters long, which moves on a straight line passing through O then cosine of angle that crank OA makes with OB when

Answer»

B has t RAVELLED 1 - unit from its extreame POSITION is (5/8)
B has TRAVELLED 3 - units from its extreme position is `((-5)/16)`
B has travelled 4 - units from its extreme position is `(-1)`
When B is at RIGHT extreme position is (1).

Answer :A::B::C::D


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