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3241004551 [841]
3 years ago
12

Verify the identity. cotangent x equals StartFraction 1 plus cosine 2 x Over sine 2 x EndFractioncot x= 1+cos2x sin2x Use the ap

propriate​ double-angle formulas to rewrite the numerator and denominator of the expression on the right. For the denominatordenominator​, use the​ double-angle formula that will produce only one term in the denominatordenominator when it is simplified.
Mathematics
1 answer:
lutik1710 [3]3 years ago
6 0

Answer with Step-by-step explanation:

We are given that

RHS

\frac{1+Cos2x}{Sin2x}

We have to verify the identity.

We know that

1+Cos2x=2Cos^2 x

Sin2x=2SinxCos x

Using the formula

\frac{2Cos^2x}{2SinxCosx}

\frac{Cosx}{Sinx}

Cot x

By using the formula

Cotx=\frac{Cosx}{Sinx}

LHS=RHS

Hence, verified

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Answer:

$1.89

Step-by-step explanation:

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multiply the first equation by 5 and the second equation by 8.

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Subtract

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Step-by-step explanation:

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y = 2x + 8

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y =( x-8)/2

f-1 (x) =( x-8)/2

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3 years ago
An electronics store makes a profit of $72 for every standard CD player sold and $90 for every portable CD sold. the managers ta
Alisiya [41]

s -> no: of standard CD players sold

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<em>I</em><em>n</em><em> </em><em>short</em><em>:</em><em> </em><em>The</em><em> </em><em>combined</em><em> </em><em>sales</em><em> </em><em>of</em><em> </em><em>Both</em><em> </em><em>the</em><em> </em><em>CD</em><em> </em><em>player</em><em>'s</em><em> </em><em>must</em><em> </em><em>exceed</em><em> </em><em>or</em><em> </em><em>atleast</em><em> </em><em>become</em><em> </em><em>equal</em><em> </em><em>to</em><em> </em><em>3</em><em>6</em><em>0</em><em>$</em><em> </em><em>to</em><em> </em><em>a</em><em>c</em><em>q</em><em>u</em><em>i</em><em>r</em><em>e</em><em> </em><em>the</em><em> </em><em>target</em><em>.</em>

<em>Thus</em><em>;</em><em> </em><em>the</em><em> </em><em>inequality</em><em> </em><em>can</em><em> </em><em>be</em><em> </em><em>stated</em><em> </em><em>as</em><em>:</em>

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<em><u>Hope it helps...</u></em>

<em><u>Hope it helps...Regards;</u></em>

<em><u>Hope it helps...Regards;Leukonov/Olegion.</u></em>

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Find the missing side lengths. Leave your answers as radicals in simplest form.
Ivahew [28]

Answer:

Answer B

Step-by-step explanation:

................

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