Question

(b) problem 14: (first taught in lesson 49) in △abc, ∠a is obtuse. which is the longest side of the triangle? after you enter your answer press go.

Explanation:

Step1: Recall the property of triangle

In a triangle, the side opposite the largest angle is the longest side.

Step2: Analyze the angles in \(\triangle ABC\)

Since \(\angle A\) is obtuse (\(\angle A> 90^{\circ}\)), and the sum of angles in a triangle is \(180^{\circ}\), so \(\angle A>\angle B\) and \(\angle A>\angle C\)

Step3: Determine the longest side

The side opposite \(\angle A\) is \(BC\)

Answer:

\(BC\)