1.

एक त्रिभुज के कोणो का अनुपात `1 : (2 )/(3 ):3 ` हो तो लघुतम कोण कितना है ?A. `21(4)/(7)`B. `25^(@)`C. `25(5^(@))/(7)`D. `25(5)/(7)`

Answer» Correct Answer - C
Ratio of angle = `1:2/3:3`
`therefore x+(2x)/3 + 3x=180^(@)`
`3x+2x+9x=540^(@)`
`x=540/14`
smallest angle = `540/14 xx 2/3`
`=180^(@)/7 =(25)5^(@)/7`


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