Question

01:43:12
MCQ (100)
Q7. In a triangle ABC, if angle A = 72°, angle
B = 48° and c = 9 cm then the Ĉ is
(A) A.69°
(B) B.66°
(C) C.60°
(D) D.63°​

Answer 1

Answer:

72°+48°+x°=180° (angle sum property)

120°+x=180°

x=180°-120°

x= 60°

Answer 2

Answer:

Given : A triangle ABC in which /_A = 72 and /_B = 48

To find : /_C

Solution:-

Using angle sum property

/_A + /_B + /_C = 180

72 + 48 + /_C = 180

/_C = 180 - 120

/_C = 60°