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mars1129 [50]
3 years ago
11

Find the exact value of tan 13Π/8 using half-angle identities.

Mathematics
1 answer:
Whitepunk [10]3 years ago
6 0
I hope this helps you



tan (13.180/8)


tan (2340/8)


tan(292,5)


-2,41
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Please describe a pattern for each sequence. Then find the next two numbers. Using inductive reasoning.
Mamont248 [21]

Answer: the first adds increasingly by 1 every time. (+6,+7,+8...) the next two numbers are 35 and 45.

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5 0
3 years ago
How can you tell a pattern shows counting on by tens?
Vitek1552 [10]
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3 years ago
Solving each system by eliminating <br> x-y+z= -1<br> x+y+3z= -3<br> 2x-y+2z= 0
Pie

There's only one system of equations here.

Let's eliminate x first,

x - y + z = -1

x = -1 + y - z

Substituting into  x + y + 3z = -3 gives

(-1 + y - z) + y + 3z = -3

2y + 2z = -2

y + z = -1

Substituting for x into 2x-y+2z = 0 gives

2(-1 + y - z) - y + 2z = 0

-2 + 2y - 2z - y + 2z = 0

y = 2

Got lucky on that one.  

z = -1 - y = -1 - 2 = -3

x = -1 + y - z = -1 + 2  - -3 = 4

Answer: x=4, y=2, z= -3

Check:

x-y+z = 4 - 2 + -3 = -1, good

x+y+3x = 4+2+3(-3) =  -3, good

2x-y+2x = 2(4)-2+2(-3) = 0, good

4 0
4 years ago
Name the form of the equation, then find the y-intercept of the following lines.....<br> y=2/5x+1
Kruka [31]

Answer:

y = 1

Step-by-step explanation:

To find the y-intercept (s), substitute in 0 for x and solve for y.

y = 2/5 x (0)+1

y-intercepts (0, 1)

7 0
3 years ago
Read 2 more answers
Question:twice as much as the sum of eighteen and eleven<br><br> in numbers and don't solve
Dmitrij [34]
2(18+11)
i think this is the expression you are looking for
3 0
4 years ago
Read 2 more answers
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