Question

The angle of a triangle ABC are in the ratio 2:3:4. Find the largest angle of the triangle. *. a)angle A=80 degree

b)angle B=80 degree

c)angle C=80 degree

d)None of these

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Answer 1

$c = 80$

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Step-by-step explanation:

$a = 2x \\ \\ b = 3x \\ \\ c = 4x \\ \\ a + b + c = 180 \\ \\ 2x + 3x + 4x = 180 \\ \\ 9x = 180 \\ \\ x = \frac{180}{9} = 20 \\ \\ largest \: angle = c = 4x = 4 \times 20 = 80$