Question

In triangle PQR, angle p = 70°, angleQ = 80° then find angleR​

Answer 1

Step-by-step explanation:

angle P+ angle Q + angle R = 180.....sum of all angles of triangles.

70+ 80+ R = 180

angle R = 180 - 150

angle R = 30°.

Answer 2

Answer:

<R = 30'

Step-by-step explanation:

( ' is actually degrees)

<PQR = <P + <Q + <R = 180'

= 70' + <Q + 80' = 180'

=  (70' + 80') + <Q = 180'

= 150' = <Q = 180'

= <Q = 180' - 150'

= <Q = 30'

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