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ANEK [815]
3 years ago
8

Find sin(u/2) if tan(u)=-7.721 and u is in quadrant 4

Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer:

.6601

Step-by-step explanation:

to find u, which we assume is an angle of course, we can take arctan of both sides.  so arctan(-7.721) = -1.4420.  this angle is in quadrant 4, but it is not in the range.  In this instance you just go around the circle again, or add 2pi, which gets us 4.8412.  You can check and you get the same answer if you take the tangent of either.

So now we have a number in the appropriate range  in the appropriate quadrant.  That means we have the correct angle.  The question asks what is sine of that angle cut in half.  so sin(4.8412/2), which gets you your answer.  let em know if something didn't make sense.  

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What is the correct answer to number 7? Please explain and break it down step by step.
a_sh-v [17]

Answer:

The answer to your question is (x + 3)

Step-by-step explanation:

                    \frac{5x + 5}{x} \frac{x^{3}+ 3x^{2}}{x^{2} - 1} \frac{x - 1}{5x}

Factor the expression

                   \frac{5(x + 1)}{x} \frac{x^{2}(x + 3)}{(x - 1)(x + 1)} \frac{x - 1}{5x}

Simplify

Cancel 5 because is in both numerator and denominator                  

Cancel (x + 1) because is in both numerator and denominator                  

Cancel (x - 1) because is in both numerator and denominator                  

Cancel x² because is in both numerator and denominator              

   

After simplifying, the result is  (x + 3)

6 0
3 years ago
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Akimi4 [234]
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Since it is instructed not to simplify, we perform the distributive property of multiplication.

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5 0
3 years ago
6 1/4 % of $3,875.00
Slav-nsk [51]

Answer:

$242.19

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96,875^400=242.1875, rounded is equal to $242.19

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3 years ago
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marin [14]
Hello,Here is your answer:The proper answer to this question is 87300000000000000.
Here is how:8.73e16=87300000000000000.
Your answer is 87300000000000000.

If you need any more help feel free to ask me! Hope this helps:D!(P.S. REMEMBER E IS EXPONET OR ^)
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LiRa [457]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
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