Question 169 • (OC27) MATH COLL ALGEBRA-1200710-S1-Degele-VOL7006P
When deriving the Law of Cosines, the equation is created using the Pythagorean theorem. Use substitution to replace in the equation below and then simplify.
Answer
A
square of c = square of a + square of b minus 2bx
B
square of c = square of a minus square of b minus 2bx
C
square of c = square of a minus square of x + square of b minus 2bx + square of x
D
square of c = square of h + square of a + square of b minus 2bx