5. In Fig. 6.43, if PQ PS, PQ
SR,
SQR = 28° and
QRT = 65°, then find the values of x and y.
We have,
PQ PS, PQ || SR,
SQR = 28° and
QRT = 65°
Now, In QRS, the side SR produced to T and PQ || RS
therefore, QRT =
=
So,
Also, QRT =
RSQ +
SQR (By exterior angle property of a triangle)
Therefore, RSQ =
QRT -
SQR
Now, in PQS,
P +
PQS +
PSQ =
y = 53°