In given figure find the values of xandy, if QS=RQ.
A
x=36∘,y=32∘
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B
x=45∘,y=32∘
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C
x=32∘,y=45∘
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D
x=45∘,y=36∘
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Solution
The correct option is Dx=45∘,y=36∘ Given:QS=RQ∠QSP=103,∠SPX=148∠SPX=∠QSP+∠PQS(Exteriorangle=Sumotwooppositeinteriorangles)⇒148=103+x⇒∠PQS=x=148−103=45∠QSPamd∠QSRarelinearpairofangles⇒103+∠QSR=180⇒∠QSR=180−103=67SinceQS=RQ∠QSR=∠SRQ=67(anglesalongequalsidesareequal)As∠SRQ=∠PRQIn△RPQ148=∠PRQ+∠PQR(exteriorangle=sumoftwooppositeinteriorangles)148=67+∠PQR∠PQR=148−67=81∠PQR=∠SQR+∠PQS(∠PQR=81and∠PQS=45)⇒y=∠SQR=81−67=36Hencex=45andy=36Option(D)isthecorrectanswer