Best answer:
Zero Product Rule:
If two factors are multiplied together to give zero, then one of the two must be zero.
(there is no other way to get zero in a multiplication).
It could be
1 - cos(x) = 0
then
1 = cos(x)
x = 0, pi, 2pi, etc...
x = k(pi) where k is any integer (positive or negative, including zero)
Or, it could...
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Best answer: Zero Product Rule:
If two factors are multiplied together to give zero, then one of the two must be zero.
(there is no other way to get zero in a multiplication).
It could be
1 - cos(x) = 0
then
1 = cos(x)
x = 0, pi, 2pi, etc...
x = k(pi) where k is any integer (positive or negative, including zero)
Or, it could be
sin(x) - 1 = 0
then
sin(x) = 1
x = pi/2, 3pi/2, 9pi/2, 11pi/2 (not 5pi/2 not 7pi/2), and so on...
8 answers
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2 days ago