In ∆ABC, BD is perpendicular to AC and CE is perpendicular to AB. If BD and CE intersect at O, prove that angleBOC = 180° - angle A.

In ∆ABC, BD is perpendicular to AC and CE is perpendicular to AB. If

1.	In ∆ABC, BD is perpendicular to AC and CE is perpendicular to AB. If BD and CE intersect at O, prove that angleBOC = 180° - angle A.
Answer» In ∆ABC, BD is perpendicular to AC and CE is perpendicular to AB. If BD and CE intersect at O, prove that angleBOC = 180° - angle A.