Answer:
B)
Step-by-step explanation:
Technically, since the function starts at its maximum, you could say the function is , but the answer choices all use sine instead. Therefore, we will have to use the cofunction identity
and we can see that the correct answer is B.
Answer:
Step-by-step explanation:
To compute x times y must use foil on the right hand side.
First:
Outer:
Inner:
Last:
------------------------------------Add like terms:
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Multiply top and bottom by bottom's conjugate:
Foil the top and just do first and last of Foil for the bottom since the bottom contains multiplying conjugates:
Replace with -1:
