Question

X Q7. If the angles of a triangle are in -/1
the ratio 1:3:5, the value of the
greatest angle is​

Answer 1

let the common ratio be x

1x + 3x + 5x = 180

9x = 180

x= 20

so first angle is = 1x. = 20

second angle. = 3x =60

third angle =5x. =100

the greatest angle is third

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