If the lengths of the sides of a triangle be 7-4 -3 and -13 cm- then the smallest angle isA- 15-B- 60-C- 45-D- 30-

The correct option is D 30^∘ cos θ = 49 + 16.3 13/2.7.4 √(3)⇒θ = 30^∘ ...

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Cosine Rule

If the length...

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If the lengths of the sides of a triangle be $7, 4 \sqrt{3} a n d \sqrt{13} c m$ , then the smallest angle is

$15^{\circ}$

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$30^{\circ}$

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$60^{\circ}$

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$45^{\circ}$

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If the lengths of the sides of a triangle be $7, 4 \sqrt{3} a n d \sqrt{13} c m$ , then the smallest angle is

7, 4 \sqrt{3}

\sqrt{13}

∠ A = 60 ° a n d b : c = \sqrt{3} + 1 : 2, t h e n t h e v a l u e o f ∠ B - ∠ C =

θ

If the angles of a triangle are x^{\circ}, 2 x^{\circ} and 3 x^{\circ}, then find the value of x .

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