The measures of the three angles of a triangle are in the ratio 1:2:3. What is the measure of the biggest angle?
Let the three angles of the triangle be $$x , 2x , 3x$$
Sum of internal angles of a triangle = 180°
=> $$x + 2x+3x = 180$$°
$$\therefore$$ Biggest angle = $$3x=3\times 30=90$$°
=> Ans - (C)
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