A kitten was given to a child as a birthday present when she was two years old. The cat lived a good life, but eventually became
2 answers:
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Answer:
Step-by-step explanation:
pythagoras theorem
a^2+b^2=c^2
8^2+9^2=x^2
64+81=x^2
145=x^2
=x
Answer:
Step-by-step explanation:
We want to solve the equation:
Over the interval [0, 2π).
First, notice that this is in quadratic form. So, to make things simpler, we can let <em>u</em> = cos(x). Substitute:
Rearrange:
Factor:
Zero Product Property:
Solve for each case:
Back-substitute:
Using the unit circle: