In ∆ABC, ∠B=∠C=36°. The measure of ∠A =
(a) 144°
(b) 54°
(c) 108°
(d) 8°
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In ∆ABC, ∠B=∠C=36°. The measure of ∠A =
(a) 144°
(b) 54°
(c) 108°
(d) 8°
ANSWER- (c) 108°
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(c) 180°
A+B+C=180°
A+36°+36°=180°
A+72°=180°
A= 180° - 72°
A= 108°
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