Question

if one angle of a triangle is 80 and the other two angle are in the ratio 3 : 7​

Answer 1

Step-by-step explanation:

one angle = 80

other two angle=3:7

let the common multiplier be x

the two angles are 3x , 7x

therefore,

80 + 3x + 7x = 180

angle sum property of triangle

3x + 7x = 180 - 80

10x = 100

x = 10

therefore,

the other two angle are 30 and 70

I hope this will help you...

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Answer 2

Step-by-step explanation:

Ratio=3:7

Let the other two angles be 3x and 7x respectively..

then,

80+ 3x+ 7x = 180

10x = 180- 80

10x = 100

x = 100÷10

x = 10

Therefore,

3x = 3(10) = 30

7x = 7(10) = 70

Hope it will help u....