Question

WILL MARK BRAINLIEST 35 POINTS Write a paragraph proof for this please

Answer 1

The proofing of the triangle is illustrated below.

How to illustrate the proof?

AB = c

BC = a

AC = b

h² = b² - x²

h² = a² - y²

a² - y² = b² - x²

a² = b² - x² + y²

Note that x = c - (c - x) = c

a² = b² - (-x)² + y²

a² = b² + c² + y²

Cos A = x/b

cos = adjacent/hypothenuse

x = bcosA

a² = b² + c² - 2bx

a² = b2 + c² - 2bccosA

Learn more about triangles on:

brainly.com/question/1058720

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