Question

LB = LC and LA=9°, then find
<B and LC​

Answer 1

Answer:

hello....

<b+<c+<a=180 ( ASP Of a triangle)

<b+<c<+90=180

<b+<c=90

<b+<b=90. (<b=<c)

2<b=90

<b=45

and <b=<c

so <c= 45

I hope it will help you

Answer 2

$\huge\underline\mathfrak{Correct\:Question-}$

If angle B = angle C and angle A = 90° then find the value of angle B and angle C.

$\huge\underline\mathfrak{Solution-}$

We know that,

angle A + angle B + angle C = 180° ( by ASP of ∆ )___(1)

Also it is given that, angle B = angle C and angle A = 90°

Let angle B and angle C be x.

Put the value of angle A, B and C in (1).

=> 90° + x + x = 180°

=> 90° + 2x = 180°

=> 2x = 180° - 90°

=> 2x = 90°

=> x = $\dfrac{90}{2}$

=> x = 45°

Therefore, angle B = angle C = 45°.