Question

in ΔPQR,anglep=70°,angle Q=65°then find angleR​

Answer 1

given that

angle p = 70°

angle q = 65°

let the angle R be x °

we know that the sum of all the tree angle is 180 °

=> 70 + 65 + x = 135

135 + x = 180

x = 180 - 135

x = 45°

=> angle R = 45°

Answer 2

In ΔPQR,

∠P = 70° and ∠Q=65°

Therefore ∠R will be,

∠P + ∠Q + ∠R = 180° ( sum of angles of triangle is 180°)

70° + 65° + ∠R = 180°

∠R =  180° - 135°

∠R = 45°