Question

Two angles of a triangle measure 90° and 30°. The measure of the third

angle is

(a) 80o

(b) 180o

(c) 60o​

Answer 1

Step by step explanation:-

let the third angle be x

90⁰ + 30° + x = 180⁰

120⁰ + x = 180⁰

x = 180⁰ - 120⁰

x = 60⁰

Therefore third angle's value is 60⁰

Answer 2

Answer:

60°

Step-by-step explanation:

90° + 30° = 120°

x= 180° - 120°

x= 60°