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Mathematics

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A carpenter designs an A-frame chalkboard. Its support bars form the legs of an isosceles triangle.

A carpenter designs an A-frame chalkboard. Its support bars form the legs of an isosceles triangle. class=

Answer :

ailingchin030424 ailingchin030424

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angle for triangle is 180°

angle ACB is 75° because it has mention that is an isosceles triangle

So that angle of BAC is 180°-75°-75°=30°

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