Mathematics · Geometry

An equilateral triangle ABC is inscribed in a circle with centre O. D is a point on the minor arc BC such that ∠CBD = 40°. Find the measure of ∠BCD.

Verified Solution4 OptionsUpdated: October 2026👁️1 View

130°
250°
320°✓
440°

Correct answer

20°

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An equilateral triangle ABC is inscribed in a circle with centre O. D is a point on the minor arc BC such that ∠CBD = 40°. Find the measure of ∠BCD.

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An equilateral triangle ABC is inscribed in a circle with centre O. D is a point on the minor arc BC such that ∠CBD = 40°. Find the measure of ∠BCD.

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