Question

anyone solve this question

Answer 1

sum of3 angles in a triangle = 180°
if one angle is 90° then another 2 angles be z and x
90° + z+ x= 180°
z+x = 90
sum of two angles is equal to the third angle
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Answer 2

let 1st angle =x

2nd angle =y

3rd angle =z

ATQ

x=y+z..........(i)

also we know x+y+z=180°

x+x=180°{from equation (i)}

x=90°

hence proved

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