Question

find the third angle of a right angled triangle whose one of the angles is 40 Degrees

Answer 1

angle 1=90°
angle 2=40°
let angle 3=x

90+40+x=180°
130+x=180°
x=180–130
x=50°

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Answer 2

Answer:

Step-by-step explanation:

We know that sum of all angles in a triangle is 18

We have 90 and 40

90 +40 + third angle =180

Third angle = 50 {on simplifying}