Question

in traingle abc ,angleA =90°,find angle b and angle c,such that ab=ac
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Answer 1

Step-by-step explanation:

A+B+C=180°

90°+B+C=180

let the B,C considered as X

X+X=180-90

2x=90°

45°

So,Angle B=45° and Angle C=45°

AB=AC

Answer 2

${\huge{\green{\underline{\underline{\sf {\mathfrak{Answer}}}}}}}$

${\bf{\orange{\underline{Given:}}}}$

• $A = 90^o$
• $AB=AC$

${\bf{\orange{\underline{Solution:}}}}$

$AB = AC$

$\implies \angle B = \angle C$

$\sf{\pink{\underline{By \ angle \ sum \ property:}}}$

$\implies \angle A + \angle B + \angle C = 180^o$

$\implies 90^o + \angle B + \angle B = 180^o$

$\implies 2\angle B= 90^o$

$\implies \angle B = 45^o$

$\green{\boxed{\implies{\boxed{\angle B = \angle C = 45^o}}}}$