Question

In a triangle PQR, let ∠PQR = 30° and the sides PQ and QR have lengths 10√3 and 10, respectively. Then, which of the following statement(s) is (are) TRUE? 

(A) ∠QPR = 45° 

(B) The area of the triangle PQR is 25√3 and ∠QRP = 120° 

(C) The radius of the incircle of the triangle PQR is 10√3 -15 

(D) The area of the circumcircle of the triangle PQR is 100π

Answer 1

Solution (B,C,D)