Question

find the value of the unknown x in the following triangle 1​

Answer 1

Step-by-step explanation:

$In  ΔPQR,</p><p>∠RPQ+∠PQR+∠RPQ \: = \: 180o  \\ \: [By \: angle \: sum \: property \: of \: a triangle]</p><p> \\ ⇒90+30+x=180degree</p><p> \\ ⇒x+120degree=180degree</p><p> \\ ⇒x=180degree−120degree \\ =60degree</p><p></p><p>$

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