Question

find the of unknown angle in each case​

Answer 1

Answer:

In triangle PQR,

RPQ+RQP+QRP = 180°

60°+75°+x+20°=180°

x=180°-155°

x= 25°

So,RQP=25°+20°

RQP=55°

and SRP = 25°

Answer 2

Here is your answer

In Triangle PQR

All angles = 180

Then 60+75+x+20=180

= x= 180-155

x= 25

Remaining angle =25