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Bingel [31]
3 years ago
15

Use a half-angle identity to find the exact value of sin pi/8

Mathematics
2 answers:
const2013 [10]3 years ago
7 0

Answer: \frac{\sqrt{2-\sqrt{2} } }{2}

Step-by-step explanation:

B on edge

riadik2000 [5.3K]3 years ago
6 0
Use a half-angle identity to find the exact value of sin pi/8

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Find the value of the missing side-Use SOH CAH TOA
Vanyuwa [196]

Answer:

4.04 (idk how you want it rounded)

Step-by-step explanation:

1) Use TOA

the equation should look like: Tan30= x/7

2) multiply each side by 7 and you’re left with 7Tan30= x

3) in your calculator do 7x30Tan equals and you get your answer

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3 years ago
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Olin [163]

Answer:

100$

Step-by-step explanation:

he profit from 1 popcorn=0.85$

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4 years ago
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Beth finished a race in 4.59 minutes. Ana finished the race in 0.7 minutes less than Beth. Fran finished the race in 1.05 minute
Firlakuza [10]
First you would wanna subtract 0.7 from 4.59 so you would get 4.59-0.7= 4.52. then you would wanna do 4.52-1.05= 3.47 for Fran
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3 years ago
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Rewrite as an exponential equation.<br> In7 = y
Nataliya [291]
Y=7 or 7y tell me if this right
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3 years ago
(HELP ASAP!)<br>Which postulate or theorem proves △HJZ∼△WJR ?
Tomtit [17]

Answer:

SAS Similarity Theorem

Step-by-step explanation:

we know that

<u>SAS Similarity Theorem</u>: States that if two sides in one triangle are proportional to two sides in another triangle and the included angle in both are congruent, then the two triangles are similar

In this problem

∠HJZ=∠RJW ----> by vertical angles

and

WJ/HJ=JR/JZ

substitute the values

8/4=6/3

2=2 ----> is true

so

Two sides of triangle HJZ are proportional with the two corresponding sides of triangle WJR and the included angle is congruent

therefore

Triangles are similar by SAS Similarity Theorem

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4 years ago
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