Name the type of forces involved in the following:-
(a) A horse pulling a cart.
(b) A sticker attached to steel almirah without glue.
(c) A coin falling to the ground on slipping from hand.
(d) A plastic comb rubbed in dry hair picking up tiny pieces of paper.
(e) A moving boat coming to rest when rowing is stopped.
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Answer:
In ∆ABC, ∠B=90°
, ∠C=
° and cot= √3 , then sin(90-) is
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