In a triangle PQR, ∠P =30 ° , ∠ Q= 40 °,So ∠R=?
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Given:
Triangle PQR
∠P =30°
∠Q =40°
To Find:
∠ R= ?
Solution:
Sum of angles of a Triangle = 180°
Let ∠R= x
Therefore, by triangle sum property -
∠P + ∠Q + ∠R = 180°
Substituting the values -
30° + 40° + x = 180°
70° + x = 180°
x = 180° - 70°
x = 110°
Answer: The value of ∠R is 110°
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