Question

Which statement about BC←→ is correct?

Answer 1

Answer: BC is not a tangent line because m∠ABC≠90°.

Step-by-step explanation:

From the given picture, we have given a triangle ΔABC, in which

∠A=25° and ∠C=60°, AB is the radius of the circle.

if BC is tangent to circle then ∠B must equals to 90°because tangent line makes right angle with the radius of the circle.

Since, we know that by angle sum property of a triangle , the sum of all angles of triangle is 180°.

Therefore, in ΔABC

∠A+∠B+∠C=180°

⇒∠B=180°-∠A-∠C

⇒∠B=180°-25° -60°

⇒ ∠B=95°≠90°

⇒ BC is not tangent line .

Answer 2

I have the same question, I believe it is because angle B is 90* but IDK, when I find out ill let you know.