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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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Step-by-step explanation:

4 0
2 years ago
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Direct Variation - Item 2845
Brums [2.3K]

The equation of direct proportion is y = 62x

<h3>Direct variation</h3>

Two quantities are said to vary directly proportional to each other when an increase in one leads to an increase in the other or a decrease in one leads to a decrease in the other.

Direct variation is given by:

y = kx

where y, x are the variables and k is the constant of proportionality.

The equation of direct proportion is y = 62x

Find out more on Direct variation at: brainly.com/question/6499629

3 0
2 years ago
Here is a question for you
dimaraw [331]

Answer:

3/8

Step-by-step explanation:

they simply combined the like terms (aka the x numbers in this case) so all that's left is 3/8

6 0
2 years ago
Have to find shaded area of the figure please help need ASAP
ladessa [460]

Answer:

199ft2

Step-by-step explanation:

area) H*W

(16ft×20ft)-(11ft×11ft)

=320ft2-121ft2

<h3>=199ft2</h3>

<em>ft</em><em> </em><em>square</em><em> </em><em>=</em><em>ft</em><em>2</em>

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3 years ago
A triangle has two sides of lengths 7 and 9.what value could the length of the third side be?
Diano4ka-milaya [45]
The side length has to be between 2 (=9-7) and 16 (=9+7). In both these corner cases the triangle will have collapsed to a line.

So the correct answers are B,C,D and E, and F is a corner case. Theoretically I suppose you have to count F in as a valid answer.
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