Question

Find the value of unknown x in the following diagram.

with step please ​

Answer 1

In ΔPQR,

∠RPQ+∠PQR+∠RPQ=180

o

[By angle sum property of a triangle]

⇒90

o

+30

o

+x=180

o

⇒x+120

o

=180

o

⇒x=180

o

−120

o

=60

o

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