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Gre4nikov [31]
3 years ago
7

If sin x = 0.5 what is the value of cos X?round the value to the nearest thousandth

Mathematics
2 answers:
Mariana [72]3 years ago
8 0
Cos(arcsin(0.5)) = 0.866
Roman55 [17]3 years ago
6 0
Use the inverse button on your calculator in degree mode for this.  Inverse sin of .5 gives you an x value of 30 (30 degree angle, that is).  Now find the cos(30) and round.  cos(30) = .866
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You flip a coin twice. Find the probability of the first flip lands tails-up and
Natasha2012 [34]

Answer:1/4

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6 0
3 years ago
8. Evaluate: f(x) = x2 + 1<br> g(x) = 5 - x<br> a. (f+g)(x) =<br> b. (f-g)(x) =
Papessa [141]

Answer:

(f+g)(x)=2x+1+5 - x

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6 0
3 years ago
Please explain I don’t I understand help
djyliett [7]

Answer:

Step-by-step explanation:

f (x) = (5(-4)) + a) (3/5 + 4) ( 6 + b)

f (x) = (-20 + a) (6 2/5) (6 + b)

f ( -20 ) = -20 + -20 (a) (6 2/5) (6 + b)

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f (-26 2/5 - 6 ) = (a) (6-6 +b)

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4 0
2 years ago
Can someone please check to make sure I got this correct? I would appreciate if you showed your work so that I could compare wit
dmitriy555 [2]

Answer:

-4

Step-by-step explanation:

[√2(cos(3π/4) + i sin(3π/4))]⁴

(√2)⁴ (cos(3π/4) + i sin(3π/4))⁴

4 (cos(3π/4) + i sin(3π/4))⁴

Using De Moivre's Theorem:

4 (cos(4 × 3π/4) + i sin(4 × 3π/4))

4 (cos(3π) + i sin(3π))

3π on the unit circle is the same as π:

4 (cos(π) + i sin(π))

4 (-1 + i (0))

-4

8 0
3 years ago
Courtney got 64 out of a 75 correct on the test what is the best estimate of the percent Courtney got correct
Firdavs [7]

Answer:

85.33%

Step-by-step explanation:

64/75=0.8533333...

x100 = 85.33%

3 0
3 years ago
Read 2 more answers
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