Diagonal of Rhombus Class 10 Notes | EduRev

Class 10 : Diagonal of Rhombus Class 10 Notes | EduRev

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ABCDis a rhombus of side 20 cm has two angle of 60 each. find diagonal AC?
Ref: https://edurev.in/question/504717/ABCDis-a-rhombus-of-side-20-cm-has-two-angle-of-60

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

Diagonal of Rhombus Class 10 Notes | EduRev

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