Question

Find the angle QTR in the given figure​

Answer 1

Answer:

Angle QTR =21°

I think it is clear for all

Answer 2

Answer:

given that  angle QTR=21

let angle TRS= PRT = y

let angle PQT = TQR = x

TRS = QTR+TQR (TRS in an exterior angle of triangle TQR)

y=21 + x

y-x =21 - - - - - - -- (1)

now in triangle PQR

PRS = QPR+PQR (exterior angle property)

so 2y = QPR+2x

2y-2x = QPR

2(y-x) = QPR

2 * 21 = QPR (from equation 1)

42 = QPR

Step-by-step explanation: