1) a2 = h2 + x2 2) h2 = 3) c2 = h2 + (b − x)2 4) c2 = h2 + 5) c2 = a2 − x2 + b2 − 2bx + x2 6) c2 = a2 + b2 7) x = acosC 8) c2 = a2 + b22abcosC
Answer
Selection 1:
a2 - x2
Selection 2:
b2 - 2bx + x2
Selection 3:
-2bx

Question

1) a2 = h2 + x2 2) h2 = 3) c2 = h2 + (b − x)2 4) c2 = h2 + 5) c2 = a2 − x2 + b2 − 2bx + x2 6) c2 = a2 + b2 7) x = acosC 8) c2 = a2 + b22abcosC

Revolt · Accepted Answer

a2 - x2; Selection 1: a2 - x2; Selection 2: b2 - 2bx + x2; Selection 3: -2bx

Law of Sines and Law of Cosines — a Deeper Look