Question

In AABC, if A= 2x, B = 3x and x = 20°, what is the measure of C?​

Answer 1

Answer:

Given:A=x,B=3x,C=y

∴Sumof△le=x+3x+y

180=4x+y

⟹180−4x=y

Also,3y−5x=30

∘

Subtituting y value, ∴3(180−4x)−5x=30

∴x=30,bysolving

∴y=180−4×30=60

∴A=30

∘

;B=90

∘

;C=60

∘

Answer 2

Answer:

80⁰

Step-by-step explanation:

In ∆ABC;

angle A + angle B + angle C = 180⁰

2x +3x + angle C = 180⁰

angle C = 180⁰ -5x

angle C = 180⁰ -5(20)

angle C = 80⁰