1.

Two supplementary angles are in the ratio `3:7` Find the difference between the angle.

Answer» Correct Answer - `72^(@)`
Let the two supplementary angles be `3x` and `7x`
`3x+7x=180^(@)`
`10x=180^(@)`
`x=18^(@)`
Difference between the angles `=7x-3x=4x`
`=4xx18^(@)=72^(@)`


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