What is the value of x in the figure above?
Solution
Correct Answer: Option C
এখানে, AB = BC
ধরি,
∠ACB = ∠BAC = a°
∴ a° + a° + 50° = 180°
⇒ 2a° + 50° = 180°
⇒ 2a° = 180° - 50°
⇒ 2a° = 130°
⇒ a° = 130°/2
a = 65°
∴ x° = 180° - 65°
= 115°
ধরি,
∠ACB = ∠BAC = a°
∴ a° + a° + 50° = 180°
⇒ 2a° + 50° = 180°
⇒ 2a° = 180° - 50°
⇒ 2a° = 130°
⇒ a° = 130°/2
a = 65°
∴ x° = 180° - 65°
= 115°
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