Answer:
x=11°
Explanation:
PSRQ is square ⇒ ∠PQR=90°⇒ ∠PQS=45° ⇒ 6x-21=45 ⇒6x=66 ⇒x=11°
Hey mate, here is your answer. Hope it helps you.
6x-21 —->
x=21+6
=27
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