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Sum of n Terms

The angles of...

Question

The angles of $△ A B C$ are in $A . P$ and $a : b : c = 1 : 2 : 3$ , then find $∠ A, ∠ B, ∠ C$ .

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Solution

$L e t t h e a n g l e s b e x, 2 x a n d 3 x$
$S o, x + 2 x + 3 x = 180^{o} => 6 x = 180^{o} => x = 30^{o}$
$S o t h e a n g l e s a r e 30^{o} 60^{o} 90^{o}$

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