Question

The angles of a triangle are in the ratio 3: 4: 5 then the value of smallest angle is (a) 150 (b) 450 (c) 600 (d) 750​

Answer 1

Answer:

let the all three angles be 3x,4x,5x

we all know that the sum of three angles of triangle is 180.

A/Q

3x+4x+5x=180

12x=180

x=180/12

x=15

if x =15

then, we can find all three angles 3x=3×15=45

4x=4×15=60

5x=5×15=75

finally, all three angles are 45,60,75

hence,the smallest angle is 45 ANS-

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