Question

ए इज इक्वल टू माइनस 3 इक्वल टू माइनस 7.12 वेरीफाई ​

Answer 1

Step-by-step explanation:

Let us suppose the angles ∠P, ∠Q, ∠R of a ΔPQR be x°, (x - 20)°, (x - 40)° respectively. Hence, the measure of each angle is 80∘, 60∘ and 40∘ respectively