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In triangle ABC, if the ratio of angle i...

In `triangle ABC`, if the ratio of angle is in the proportion 3:5:4, then the difference between the biggest and the smallest angle (in degrees) is:
त्रिभुज ABC में, यदि कोणों का अनुपात 3 : 5 : 4 है, तो सबसे बड़े और सबसे छोटे कोण के बीच क्या अंतर (डिग्री में ) होगा ?

A

`25^@`

B

`35^@`

C

`30^@`

D

`20^@`

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