In `Delta PQR,angleP=70^(@) " and " angleR=30^(@)` .Which side of this triangle is the longest ? Give reason for your answer

Explanation

Given in `Delta PQR ,angleP=70^(@) and angleR=30^(@)`
We know that,sum of all angles of a triangle is `180^(@)`
`therefore " " angleP + angleQ+ angle R=180^(@)`

`angleQ=180^(@)-(70^(@)+30^(@))`
`=80^(@)`
We know that here `angleQ` is logest, so side PR is longest
[Since in a triangle,the side oppoesite angle is the longest ]