![If a circle touches the side BC of a triangle ABC at P and extended sides AB and AC at Q and R, respectively, prove that AQ = 1/2 (BC + CA + AB) If a circle touches the side BC of a triangle ABC at P and extended sides AB and AC at Q and R, respectively, prove that AQ = 1/2 (BC + CA + AB)](https://d138zd1ktt9iqe.cloudfront.net/media/seo_landing_files/if-a-circle-touches-the-side-bc-of-a-triangle-abc-at-p-and-extended-sides-ab-and-ac-at-q-and-r-1643385893.png)
If a circle touches the side BC of a triangle ABC at P and extended sides AB and AC at Q and R, respectively, prove that AQ = 1/2 (BC + CA + AB)
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The perpendicular from A on side BC of a Δ ABC intersect BC at D such that DB = 3CD . Prove that 2AB^2 = 2AC^2 + BC^2
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![SOLVED: 'Find the length of side BC. Give your answer to 3 significant figures. С A 71° 6.3 cm B Find the length of side BC. Give your answer to 3 significant SOLVED: 'Find the length of side BC. Give your answer to 3 significant figures. С A 71° 6.3 cm B Find the length of side BC. Give your answer to 3 significant](https://cdn.numerade.com/ask_previews/c97f23d8-39b6-4136-afb4-aadb0ee1fb99_large.jpg)
SOLVED: 'Find the length of side BC. Give your answer to 3 significant figures. С A 71° 6.3 cm B Find the length of side BC. Give your answer to 3 significant
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