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maksim [4K]
2 years ago
13

Given that cos 63°≈ 0.454, enter the sine of a complementary angle. sin

Mathematics
1 answer:
jek_recluse [69]2 years ago
4 0

Answer:

\cos(63^\circ) is the same as \sin(27^\circ) by co-function identities

Step-by-step explanation:

Remember that complementary angles add up to 90°. The angle that i s complementary to 63° is 27°.

Also recall the co-function identities:

  • sin (90° – x) = cos x
  • cos (90° – x) = sin x

This means that \cos(90^\circ-27^\circ)=\sin(27^\circ)\approx0.454.

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Answer:

The first number is 16

The second number is 6

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Step-by-step explanation:

The information from the word problem are;

The count of the numbers in the sum = 3 numbers

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The value of the first number = 10 + The value of the second

Let 'x' represent the first number, let 'y' represent the second number and let 'z' represent the third number, we have;

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From equation (3), we get;

x = y + 10

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Substituting the value of <em>z</em> from equation (2) and the value of <em>y</em> from equation (4) in equation (1) gives;

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y = x - 10

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