in triangle ABC, AP perpendicular BC, CQ perpendicular AB and BR perpendicular AC, prove that angle OPQ=angle OPR

in triangle ABC, AP perpendicular BC, CQ perpendicular AB and BR perpendicular AC, prove that angle OPQ=angle OPR https://www.studyhelpus.com/Questions & Answers/in-triangle-abc-ap-perpendicular-bc-cq-perpendicular-ab-and-br-perpendicular-ac-prove-that-angle-opqangle-opr/?feed_id=1911&_unique_id=6316201b19289