Question

In ∆ PQR , ∠ P = 45° , ∠ Q = 60° then ∠ R = ? *
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Answer 1

Answer:

75°

Step-by-step explanation:

P+Q+R=180..... sum of Angles of triangle is 180°

45°+60°+R=180°

R=180°-105°

R=75°

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Answer 2

Answer:

75*

Step-by-step explanation:

In ∆PQR

∠P + ∠Q + ∠R = 180*

:. 45 + 60 + ∠R = 180*

:. 105 + ∠R = 180*

:. ∠R = 180 - 105

:. ∠R = 75