Question

Can someone please help me with this?​

Answer 1

Answer:

69°

Step-by-step explanation:

∠RQS = 21° {The angle subtended by an arc at the center of a circle is double that of the angle that the arc subtends at any other given point on the circle.}

Now, ∠PRQ = 90° {Angle subtended by diameter at the circumference}

∠TRQ = 180° - ∠PRQ = 90°

In the Triangle RTQ:

        ∠RTS = 180° - ∠TRQ - ∠RQS

                    = 180° - 90° - 21° = 69°