Question

Q9. In a right angled triangle
where angle A= 90° and
AB=AC. What are the values of
angle B​

Answer 1

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°