Discover Circle Theorem Help for Triangle PST: PSR Angle = 77 Degrees

[Chijioke]

Homework Statement

Find angle PSR, if PQRS is a circle and PQT and SRT are straight lines

Relevant Equations

sum of angles in a triangle = 180 degree

From triangle PST, angle PSR = 180-(81+22)
=77 degrees sum of angles in triangle.
Is my attempt correct?

 

[DaveE]

Homework Statement: Find angle PSR, if PQRS is a circle and PQT and SRT are straight lines
Relevant Equations: sum of angles in a triangle = 180 degree

View attachment 329703
From triangle PST, angle PSR = 180-(81+22)
=77 degrees sum of angles in triangle.
Is my attempt correct?

Looks good to me.