Question

if in ∆abc angleB is equal to 90° and AB = BC then angle A is equal to​

Answer 1

Answer:

45

Step-by-step explanation:

AB = BC

angle c = angle a

90 +2x =180

2x = 90

x = 45

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Answer 2

Answer:

Angle A=45

Step-by-step explanation:

let angle A and angle C be x

Since opposite sides are equal

the angles opposite to equal sides are also equal

So, by angle sum property of a triangle

We get, 90+x+x=180

2x=90x=45