How to prove that ab + bc = ac?
If A1 B1 and C are three points on a line and B lies between A and C, then prove that AB + BC = AC? Assuming all the quantities given in the 10 problems of the previous test of your understanding -2 as positive quantities find their opposite quantiti …
What is the value of AB and AC in the diagram?
In the diagram, AB = 10 and AC = 2 StartRoot 10 EndRoot. What is the perimeter of ?ABC? 10 units Still stuck? Get 1-on-1 help from an expert tutor now.
What is the length of AB and BC in ?ABC?
Tick the correct answer and justify: In ?ABC, AB = 6?3 cm, AC = 12 cm and BC = 6 cm. The angle B is - Mathematics | Shaalaa.com
How to prove that BD is perpendicular to AC?
An isosceles triangle ABC, with AB = AC. BD is perpendicular from B to the side AC. To Prove: BD 2 - CD 2 = 2CD.AD Proof : In right triangle ABD, AB 2 = AD 2 + BD 2 [Using Pythagoras theorem] But AB = AC ? AC 2 = AD 2 + BD 2 ? (AD + DC) 2 = AD 2 + BD 2 ? AD 2 + DC 2 + 2AD.DC = AD 2 + BD 2 ? 2AD.DC = BD 2 - DC 2 ? BD 2 - DC 2 = 2AD.CD.