Question

In ∆PQR if ∠P = 78°. ∠Q= 46° then find ∠R. 
1) 60°
2) 56°
3) 124°
4) 28°​

Answer 1

Answer:

3)56° will be the correct option.

Step-by-step explanation:

180°-(78°+46°)

180°-124°

56°

Answer 2

Answer:

P=78°, Q=46°, R=x

THE SUM OF ALL INTERIOR ANGLE OF TRIANGLE IS = 180°

= 78° + 46° + X = 180°

= 124° + X = 180°

= X = 180° - 124°

= X = 56°

R = 56°