Question

if an exterior angle of triangle is 130 and one of the interior opposite angle is 60 find the other interior opposite angle​

Answer 1

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$\implies$ We have the property of exterior and interior angles,

Exterior angle is equal to the sum of interior opposite angles.

From triangle ABC is figure above,

∠ACD=∠ABC+∠BAC

Let, ∠ABC=60∘

∠ACD=130∘

∴130∘=60∘+∠BAC

∠BAC=130∘−60∘=70∘ This is the value of the other opposite angle.

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