Answer:
(a)
Step-by-step explanation:
Given 3 sides of a triangle a, b and c where c is the longest side, then
• If a² + b² = c² ⇒ triangle is right
• If a² + b² > c² ⇒ triangle is acute
• If a² + b² < c² ⇒ triangle is obtuse
Here a = 65, b = 72 and c = 96
65² + 72² ? 96²
4225 + 5184 ? 9216
9409 > 9216 ⇒ triangle is acute
