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In a mombus PORS,the diagonals intersect at o Given that `/_P=120^(@)` and `OP=3cm` .What is the side of the mombus?A. 4 cmB. 6 cmC. `3 sqrt(3)` cmD. Cannot be determined |
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Answer» Correct Answer - b (i) In a `30^(@) -60^(@)-90^(@)` triangle , the corresponding side are in the ratio `1: sqrt(3) :2`. (ii) Find the angles of one of the `Delta ("les")` formed by the diagonals in the rhombus. (iii) Use the concept of ratio of sides and ratio of angles and get side .Sides opposite to angles `30^(@)-60^(@)-90^(@)` will be in the ratio `1: sqrt(2) :2`. |
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