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gregori [183]
3 years ago
11

Which function is equivalent to y= -cot(x)?

Mathematics
2 answers:
erastova [34]3 years ago
7 0
We know that
tan (A+B)=sin (A+B)/cos (A+B)
sin (A+B)=sin A*cos B+sin B*cos A
cos (A+B)=cos A*cos B-sin A*sin B
so
for (x+pi/2)
A=x
B=pi/2
sin A=sin x
sin B=1
cos A=cos x
cos B=0
sin (A+B)=sin x*0+1*cos x------> cos x
cos (A+B)=cos x*0-sin x*1------> -sin x
tan (x+pi/2)=cos x/(-sin x)------> -cot x

the answer is the option
D. y= tan (x+pi/2)
vitfil [10]3 years ago
7 0

Answer:

D. y = tan(x + pi/2)

Step-by-step explanation:

this is the correct answer on ed-genuity, hope this helps! :)

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