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Artemon [7]
3 years ago
14

Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal. cos x - cos x

sinx = cos3 x
Mathematics
2 answers:
dangina [55]3 years ago
4 0
The answer is 0 because 180 degrees does not make a valid statement
Mashutka [201]3 years ago
3 0

Answer:

The answer is pi/4

Step-by-step explanation:

You substitute each x for "pi/4", you will see that the equation is incorrect, the two values are no longer equal.

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Natasha_Volkova [10]

Answer:

x=3

Step-by-step explanation:

The whole line (DF) equals 9x - 39. So you need to make that equal to 47+3x+10 and work out like so. I hope this helps!

8 0
2 years ago
Solve the equation.<br> 9 = 9m<br> M=_____
Schach [20]

9=9m

Next, what you want to do is divide both sides by m to get the variable.

m=1

4 0
3 years ago
How to rewite this x+4y=-4 in form y=mx+b
Alex
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3 0
3 years ago
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You are converting 8 centimeters to meters
morpeh [17]

Answer:

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Step-by-step explanation:

8×10^-2 Because we convert

from cm to m.

8 0
3 years ago
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When completely factored, x^2 + x - 6 is equivalent to which of the following? A. (x + 1)(x – 6) B. (x + 3)(x – 2) C. (x + 6)(x
Mariana [72]
X^2+x-6

x^2-2x+3x-6

x(x-2)+3(x-2)

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5 0
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