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ABC एक अंको त्रिभुज है और B समकोण है और ...

ABC एक अंको त्रिभुज है और B समकोण है और `angle=60^(@)` और AB=20 सेमी है तो भुजा BC तथा CA का अनुपात क्या होगा?

A

`sqrt(3):1`

B

`1:sqrt(3)`

C

`sqrt(3):sqrt(2)`

D

`sqrt(3):2`

लिखित उत्तर

Verified by Experts

The correct Answer is:
d
ltbr. `AB=20cm`
`BC:CA=`?
`rArr(BC)/(CA)=cos30^(@)`
`(angleC=180^(@)-90^(@)-60^(@)rArr30^(@))`
`rArr(BC)/(CA)=sqrt(3)/(2)`
`rArrsqrt(3):2`
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