Question

a rhombus of side 20cm has two angles of 60°each . find the length of the digonal
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Answer 1

Answer:

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Step-by-step explanation:

inΔAOD

sin30°=AO/AD

1/2=AO/20

AO=10cm

∴diagonal AC=2AO=20cm

now

cos30°=OD/AD

√3/2=OD/20

OD=10√3cm

∴diagonal BD=2OD=20√3cm

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