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kondaur [170]
3 years ago
10

Please help with this

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0

Answer:

its b

Step-by-step explanation:

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scZoUnD [109]
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2 years ago
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3 years ago
Verify the identity <br> cos ( x + pi/2) = -sin x
IgorLugansk [536]
Hello 
cos ( x + pi/2) =cos(x)cos(pi/2)-sin(x) sin(pi/2) 
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3 years ago
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kow [346]

Answer:

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Step-by-step explanation:

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3 0
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