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Paladinen [302]
3 years ago
14

Evaluate cos(37°15'). 0.7944 0.7960 0.7971

Mathematics
2 answers:
Anvisha [2.4K]3 years ago
5 0

cos(37°15') = cos(37.25°) ≈ 0.7960

15' means 15/60 of a degree, or 0.25 degrees.

_____

Note: the calculator mode is set to <em>Degrees</em>.

zvonat [6]3 years ago
3 0

Answer:

cos(37°15')=0.7960

Step-by-step explanation:

Evaluate cos(37°15').

First we convert 15' into degree

60' = 1 degree, to convert 15' to degree we divide by 60

So 15' = \frac{15}{60} =0.25 degree

cos(37°15')=cos(37° +0.25°)= cos(37.25°)

Now we use calculator to find the value of cos(37.25°)

Put the calculator in degree mode

cos(37.25°)=0.7960

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Eli has saved $48.50. Eli's brother borrowed 1/10 of Eli's savings. How much money does Eli have left?
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$43.65

Step-by-step explanation:

1. divide 48.50 by 10

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The fourth term of an Arithmetic Sequence is equal to 3 times the first term, and the seventh term exceeds twice the third term
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Answer:

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Step-by-step explanation:

The first term is x.

The common difference is d.

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7th term: x + 6d

"The fourth term of an Arithmetic Sequence is equal to 3 times the first term"

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"the seventh term exceeds twice the third term by 1"

x + 6d = 2(x + 2d) + 1       Eq. 2

Simplify Eq. 1:

2x = 3d

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Multiply both sides of the last equation by 2.

2x = 4d - 2

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Since 2x = 2x, then the right sides are equal.

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Therefore x = 45 and y = 90

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