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Tcecarenko [31]
3 years ago
8

Solve this Will mark as brainliest

Mathematics
1 answer:
Elina [12.6K]3 years ago
6 0

Step-by-step explanation:

11+11+9 equals 30 just do the math it simple

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To solve the equation 5sin(2x)=3cosx, you should rewrite it as___.​
galina1969 [7]

Answer:

A

Step-by-step explanation:

We want to solve the equation:

5\sin(2x)=3\cos(x)

To do so, we can rewrite the equation.

Recall the double-angle for sine:

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By substitution:

5\left(2\sin(x)\cos(x)\right)=3\cos(x)

Distribute:

10\sin(x)\cos(x)=3\cos(x)

We can subtract 3cos(x) from both sides:

10\sin(x)\cos(x)-3\cos(x)=0

And factor:

\cos(x)\left(10\sin(x)-3\right)=0

Hence, our answer is A.

*It is important to note that we should not divide both sides by cos(x) to acquire 10sin(x) = 3. This is because we need to find the values of x, and one or more may result in cos(x) = 0, and we cannot divide by 0. Hence, we should subtract and then factor.

5 0
2 years ago
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Formula for face diagonal?
Makovka662 [10]

Answer:

Face diagonal of a cube:

Step-by-step explanation:

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What is a transformation
lianna [129]
A way to change the shape of a point, a line, or shape.
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Laura can finish payroll in 3 hours. it takes ben 5 hours to do the same job. If they work together, how long should it take the
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Answer:

15/8 hours .................

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Let L be Laura, and B be Ben. Then:

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Next:

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15/8 (L+B)=1

5 0
3 years ago
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