Question

Helppppppppppp
me
class 9th
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Answer 1

Answer:

100

Step-by-step explanation:

Given : ABC is a ∆.

and angle BAC=80°

Solution : angle BAC + angle ABC + angle ACB=180°

(sum of the angles of a triangle)

80°+angle ABC + angle ACB =180°

angle ABC + angle ACB =180°-80°

=100°