MP and MQ are two tangents from \( M \) to the circle with centre \( \mathrm{O} \). At point \( ... VIDEO
MP and MQ are two tangents from \( M \) to the circle with centre \( \mathrm{O} \). At point \( \mathrm{B} \), a tangent is drawn which intersects \( \mathrm{MP} \) at point \( \mathrm{A} \) and \( \mathrm{MQ} \) at \( \mathrm{C} \). Prove that \( \mathrm{AC}=\mathrm{PA}+\mathrm{QC} \)
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