Question

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Answer 1

Answer:

(b). 15°

Step-by-step explanation:

Hope it help you

Answer 2

Answer:

as we all know, sum of three angles of triangle is 180°.

90+5x+X=180°

90+6x=180°

6x=180-90

6x=90

X=15

∆PRQ=15°

∆QPR=75°