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3 years ago

6

Please help me with these questions this is the main reason why my grade is down and I don’t get it please please if u know the

answers ??? THANK YOU

1 answer:

masya89 [10]3 years ago

5 0

Answer:

what is this and give more info next time too

Step-by-step explanation:

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Sin x+sin 5x= cot 2x

butalik [34]

Step-by-step explanation:

sinx+sin(x+4x) =cot2x
sinx+sinx cos4x+cosx sin4x=cot2x

sinx+sinx cos4x=sinx (1+cos4x) =

sinx (1-1+2(cos2x)^2) =2sinx (cos2x)^2

sin4x=2sin2xcos2x

2sinx(cos2x)^2+cosx+2sin2xcos2x=cot2x

2sinxcos2x(cos2x+2(cosx)^2)=cot2x

but 2(cosx)^2=cos2x+1

2sinxcos2x(cos2x+cos2x+1)=cos2x/sin2x

(2sinxsin2x)(2cos2x+1) =1

(4cosx(sinx)^2)(2cos2x+1) =1

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Answer:0.08

Step-by-step explanation:

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Mumz [18]

Here is the answer from SparkNotes

http://www.sparknotes.com/math/algebra2/operationsonfunctions/section3.rhtml

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(I hope this was helpful)

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Which two points on the number line represent numbers that can be combined to make zero?

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Answer:

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