Question

in a right angled triangle where angle a=90°.and ab =ac. what are the values of angle b​

Answer 1

Answer:

Since AB=AC,

So, △ABC is Right-angled isosceles.

∠B=∠C ...(angles opp. to equal sides are equal)

∠A+∠B+∠C=180

∘

...(angle - sum property of a triangle)

Substituting ∠B=∠C, ∠A=90

o

90

∘

+2∠B=180

∘

2∠B=180

∘

–90

∘

=90

∘

⇒∠B=45

∘

So, ∠C=∠B=45

o

.

Answer 2

Answer:

b+b+90=180

2b=180-90

2b=90

b=90/2

b=45

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