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defon
3 years ago
8

Rewrite with only sin x and cos x. sin 2x - cos 2x

Mathematics
2 answers:
Ymorist [56]3 years ago
4 0
Sin2x = 2sinxcosx
cos2x = (cosx)^2 - (sinx)^2 = 2(cosx)^2 -1 = 1- 2(sinx)^2

Any combination you want is here.
RoseWind [281]3 years ago
3 0
Sin2x-cos2x
2sinxcosx-2cos^2x-1
2cos^2x+2sinxcosx-1
I think that's how you do this one.
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The triplets, nick, Brian, and dan, exit their preschool classroom every day in a random order. Create an organized list to show
AfilCa [17]

The set of all possibilities is called sample space and is denoted by S.

So, S = {NBD, NDB, BDN, BND, DBN, DNB} and n(S) = 8

and we need to find the probability of NBD

E = {NBD} and n(E) = 1

The probability of an even is defined by p(E) = \frac{n(E)}{n(S)}

Hence,  p(E) = \frac{1}{8}

4 0
3 years ago
Need an answer for this question
Natasha_Volkova [10]
Answer: f(-2)=6.
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5 0
2 years ago
Triangle A B C is shown. Angle B C A is a right angle. The length of hypotenuse A B is 26, the length of A C is 10, and the leng
ExtremeBDS [4]

Answer:

<h2>The right option is twelve-fifths</h2>

Step-by-step explanation:

Given a right angle triangle ABC as shown in the diagram. If ∠BCA = 90°, the hypotenuse AB = 26, AC = 10 and BC = 24.

Using the SOH, CAH, TOA trigonometry identity, SInce we are to find tanA, we will use TOA. According to TOA;

Tan (A) = opp/adj

Taken BC as opposite side since it is facing angle A directly and AC as the adjacent;

tan(A) = BC/AC

tan(A) = 24/10

tan(A) = 12/5

The right option is therefore twelve-fifths

7 0
3 years ago
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Without solving it, determine the nature of the roots of this equation:
ycow [4]
<h2>Answer:</h2>

x = 1, -4

Step-by-step explanation:

Find the roots of  x:

2  +  3

x  −  4  =  0  by solving for  x

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6 0
3 years ago
What is the domain of the function y=3 in x graphed below?
Jet001 [13]
What is the domain of the function y=3 in x graphed below?

Domain is x>0, ln (0) is undefined and there is no negative ln.
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3 years ago
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