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erica [24]
2 years ago
12

Hi! can someone help!? asap!!

Mathematics
1 answer:
Marina86 [1]2 years ago
8 0
It’s b, Bc it is :) it really is
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Given that sin theta = 1/4, 0
GaryK [48]
Answer: cos(Θ) = (√15) / 4

Explanation:

The question states:

1) sin(Θ) = 1/4

2) 0 < Θ < π / 2

3) find cos(Θ)

This is how you solve it.

1) Use the fundamental identity (in this part I use α instead of Θ, just for facility of wirting the symbols, but they mean the same for the case).

(cos \alpha )^2 + (sin \alpha )^2 =1

2) From which you can find:

(cos \alpha )^2 = 1 - (sin \alpha )^2

3) Replace sin(α) with 1/4

=> (cos \alpha )^2 = 1 - (1/4)^2 = 1 - 1/16 = 15/16

=> cos \alpha =+/- \sqrt{15/16} = +/- (\sqrt{15} )/4

4) Given that the angle is in the first quadrant, you know that cosine is positive and the final answer is:

cos(Θ) = \sqrt{15} /4.

And that is the answer.
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3 years ago
Help please
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Answer:

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Step-by-step explanation:

the lines will overlap in quadrant I (the positive quadrant)

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3 years ago
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Mr martinez sells a car for $15,400. how much does he earn with a 1.5% commission
spayn [35]
It would be 15400*0.015=How much he will make
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an online media service offers video and music downloads. Each download of a song costs $1.2. Each download of a video costs 4 t
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She can buy 26 songs after purchasing 10 videos
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Three points on the graph of the function f(x)f(x) are \{(0, 4), (1, 6), (2, 8)\}{(0,4),(1,6),(2,8)}. Which equation represents
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Answer:

y = 2x + 4

Step-by-step explanation:

Slope: (6-4)/(1-0) = 2

y = 2x + 4

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