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Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 10 - Circles > 3. If from an external point B of a circle with centre O, two tangents BC and BD are drawn such that ∠DBC = 120°, prove that BC + BD = BO, i.e., BO = 2BC.

3. If from an external point B of a circle with centre O, two tangents BC and BD are drawn such that ∠DBC = 120°, prove that BC + BD = BO, i.e., BO = 2BC.

3. If from an external point B of a circle with centre O BO = 2BC. i.e prove that BC + BD = BO two tangents BC and BD are drawn such that ∠DBC = 120°