Question

If in A ABC, AB=AC and ZABC = 55°, then ZBAC is equal to
(a) 350
(c) 70°
(6) 550
(d) 110​

Answer 1

Answer:

c) 70°

Step-by-step explanation:

Given-:

<ABC = 55°

AB = AC

To find-:

<BAC =?

Solution-:

In ∆ ABC,

AB=AC { Given }

=> <ABC = <ACB {angles opposite to equal sides are equal}

Now, by angles sum property

<ABC+<ACB+<BAC =180°

55°+55°+<BAC = 180°

<BAC =180°-110°

<BAC = 70°

Hope it helps....