Q9. In a right angled triangle
where angle A= 90° and
AB=AC. What are the values of
angle B
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given:
angle A=90°,
AB=AC,
To find: angle B = ?
angle A =90°
angle B = angle C .........(angle opposite to equal
sides are equal,
let angle B = X
so, angle B = angle C = X
angle A + angle B + angle C = 180°
( angle sum property of triangle )
X + X + 90° = 180°
2X + 90° = 180°
2X = 180° – 90°
2X = 90°
X = 90/2
X = 45°
so, angle B = angle C = 45°
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