Question

AB =AC . find the value of x.
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Answer 1

Answer:

the value of x=80degree

Answer 2

$\huge\mathfrak{Solution :-}$

Given :-

• /_ A = 60 ° + 20 ° = 80 °
• AB = AC
• If AB = AC , it means that /_ ABC = /_ACB

To find :-

• Value of x = ?

Answer :-

/_A + /_B + /_C = 180 °

=> /_B + /_ C = 180° - 80 ° [ Since, value of /_A is ৪0 °]

=> 2/_B = 100 ° [ Since, /_B = /_C .. /_B + /_B = 2/_B ]

=> /_ B = 100 ° / 2

=> /_ B = 50°

Thus, /_B = /_C = 50 °

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