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Maslowich
3 years ago
7

��� How does the value of sine and cosine of complementary angles relate

Mathematics
1 answer:
vlabodo [156]3 years ago
7 0
Cosine is co added onto sine. Basically, cosine is the sine function moved over 90degrees or pi/2 (pi/2 on a unit circle is 90 degrees)

Sin(x)=cos(x+90) <--degrees
Sin(x)=cos(x+pi/2) <--radians

The above two equations for converting them is called a cofunction identity. There's many more identities to convert sines, cosines, tangents, cosecantes, secantes, and cotangents between each other. This is taught to you in PreCalculus.
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Multiply the Polynomials:<br><br> (2x+3) (-x+2y-4)
GREYUIT [131]

The result of multiplying the polynomials is (2x + 3) (-x + 2y - 4) = -2x² + 4xy - 11x + 6y - 12

<h3>How to multiply the polynomials?</h3>

The polynomial expression is given as

(2x + 3) (-x + 2y - 4)

Expand the brackets in the above polynomial expression

So, we have

(2x + 3) (-x + 2y - 4) = 2x * (-x + 2y - 4) + 3 * (-x + 2y - 4)

Open the brackets in the above polynomial expression

So, we have

(2x + 3) (-x + 2y - 4) = -2x² + 4xy - 8x + -3x + 6y - 12

Evaluate the like terms in the above polynomial expression

So, we have

(2x + 3) (-x + 2y - 4) = -2x² + 4xy - 11x + 6y - 12

Hence, the solution is -2x² + 4xy - 11x + 6y - 12

Read more about polynomials at

brainly.com/question/17517586

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3 0
1 year ago
Which expression is equivalent to 3 b minus 1? 5 b + 3 minus b minus b minus 4 5 b + 3 minus 2 b minus 5 2 b minus 5 + b minus 4
charle [14.2K]

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Step-by-step explanation:i think thats the answer pls mark brainliest

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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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2 years ago
A circle has a radius of 12 and a center at (-7,4)<br> Find the equation of the circle
Eddi Din [679]
<span>The equation for the circle is

</span><span>(x+7)^2+(y-4)^2=12^2 </span>
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3 years ago
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