i need to know the area of a rhombus ABCD if mLABD =60 and AB = 16 m.

find the area of rhombus ABCD if AC = 10 cm and AB = 13 cm

plz just show me how to get started, don't tell me the answer

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- October 8th 2008, 01:38 PMcloudbydayA rhombus
i need to know the area of a rhombus ABCD if mLABD =60 and AB = 16 m.

find the area of rhombus ABCD if AC = 10 cm and AB = 13 cm

plz just show me how to get started, don't tell me the answer - October 8th 2008, 01:44 PMicemanfan
Let the diagonals AC and BD intersect at point P.

In the first question, use trigonometry to calculate the length of BP and AP. Note that L(AP) = L(CP) and L(BP) = L(DP).

In the second question, AP is half the length of AC. Use the Pythagorean Theorem to calculate the length of BP from here.