Q. 33.6( 13 Votes )
In 
, if 3
= 4
=6
, calculate
, 
and 
.
Answer :
=80°, 
=60°, 
=40°
Let 3
= 4
=6
= a
Therefore,
∠A = a/3, ∠B = a/4, ∠C = a/6 ____________________ (i)
∠A + ∠B + ∠C = 180° [Sum of angles]
⇒ a/3 + a/4 + a/6 = 180°
⇒ 9a/12 = 180°
⇒ a = 240°
⇒ ∠A = a/3 = 240° /3 = 80°
⇒ ∠B = a/4 = 240° /4 = 60°
⇒ ∠C = a/6 = 240° /6 = 40°
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