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igomit [66]
2 years ago
15

If sin(t) = 3/5 and t is in the 2nd quadrant, find cos(t).

Mathematics
1 answer:
NemiM [27]2 years ago
5 0

Cosine is \frac{hypotenuse}{adjacent}.

Apply the equation:

sin(t) = \frac{3}{5} \\3^2 + b^2 = 5^2\\b^2 = 5^2 - 3^2\\\\\sqrt{b^2}  = \sqrt{5^2}- \sqrt{3^2}\\\\\\b = 5 - 3 \\\\b = 2

B is the adjacent side so

cosine is:

Cos(t) = 5/2

Have a great day,

And I hope this helps you!

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<u>Step-by-step explanation:</u>

It is given that,

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<u>To find the money in Felix's account after 21 years :</u>

The formula used here is,

⇒ A = P(1+r/n)^{nt}

where A is the amount after 21 years.

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  • r is the rate ⇒ r = 0.06
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⇒ 2000(1+0.06/1)^{21\times 1}

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Therefore, The money in the Felix's account will be $6798 when he is 21.

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Answer:

Step-by-step explanation:

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Step-by-step explanation:

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