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JulijaS [17]
3 years ago
12

Find the exact value by using a half-angle identity. tan seven pi divided by eight

Mathematics
1 answer:
murzikaleks [220]3 years ago
7 0

9514 1404 393

Answer:

  1 -√2

Step-by-step explanation:

  \tan(x/2)=\dfrac{1-\cos(x)}{\sin(x)}\\\\\tan\left(\dfrac{1}{2}\cdot\dfrac{7\pi}{4}\right)=\dfrac{1-\cos\dfrac{7\pi}{4}}{\sin\dfrac{7\pi}{4}}=\dfrac{1-\dfrac{1}{\sqrt{2}}}{-\dfrac{1}{\sqrt{2}}}=\boxed{1-\sqrt{2}}

tan(7π/8) = 1 -√2

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shtirl [24]

Answer:

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Step-by-step explanation:

Here,

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6 0
1 year ago
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Abigail made a quilt that has the area of 4,800 sq. inches. The length of the quilt is 1 1/3 times the width of the quilt. What
Aliun [14]
For this case we model the problem as a rectangle.
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 A = (w) * (l)
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8 0
3 years ago
I AM VERY DESPERATE NOW!!! I HAVE ASKED THIS SAME QUESTION 3 TIMES AND NOBODY HAS BEEN ABLE TO ANSWER IT. PLEASE HELP, SOMEONE!!
Alexandra [31]

Answer:

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ruslelena [56]
#1
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#2
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Nastasia [14]

Answer:

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8 0
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