Analyze the image and provide the mathematical information presented.

The image shows a right-angled triangle PQR, where angle P is 90 degrees.

A line segment RS is drawn from vertex R to a point S on the hypotenuse PQ, such that S is between P and Q.

There are markings indicating that angle PRS is equal to angle SRQ.

The following lengths are given:

• PS = 4,1
• RS = 8,2

The question asks to find:

• ∠RQT = ?
• SQ = ?

Additionally, there is a marking for angle RQT, which appears to be an obtuse angle.