In the given figure; PQR is a straight line. If ∠SQR = 75°; find ∠PQS.
Given,
PQR is a straight line.
In the given figure,
∠PQS + ∠SQR = 180°
[linear pair angles]
∠PQS + 75° = 180°
On further calculation, we get,
∠PQS = 180° – 75°
∠PQS = 105°