Question

A triangle has angles that measure n degrees,n+20degrees,and 3n-15 degrees.what are thier measures?

Answer 1

Given that a triangle has angles that measure `n ^@,(n+20)^@ and (3n-15)^@`.

So
`n ^@+(n+20)^@ +(3n-15)^@=180^@`

`=>5n^@+5^@=180^@`

`=>n=175/5=35^@`

Hence three angles are

`n=35 ^@,n+20=55^@ and 3n-15= 90^@`.